Ranted about him before. The to the max windows fanboy. But next to being that, he had the habit of shooting down any and every idea/suggestion etc I had. Which is still quite 'fine' if you come up with good alternatives but he only came up with his own fucking preferences. (thing to keep in mind is that he wasn't even on our (me and one other guy) projects (!!!))

It would always go like this:

Him: soo, how are you planning on doing this?
Me: well I was thinking about {insert idea}.
Him: *wtf face* why?!?
Me: *comes up with constructive arguments*
Him: well, it's non of my business as I'm not on the project...... Buuuuuuut I'd do it with this: {insert anything in relation to Microsoft and the stack i said}.

It's bearable if that happens once.
It's annoying to fucking death when you hear that 10+ FUCKING TIMES EVERY DAY.

Every time I ended up completely boiling inside and getting the best possible practice at self-control. I never snapped even once.

When he finished his internship I talked to a colleague that he had to partner up with after a week or two to ask what he thought about that guy.
His reaction: he's a fucking disrespectful lowlife and a cunt. He was veeeeeeeeeery annoying with me and always shooting down my ideas but danm he was nearly fucking bullying/intimidating you every fucking day! He makes me fucking sick.

Taking a database class, prof insists on using Microsoft Sql server 2014. "Okay cool" said the Microsoft surface fan boy inside me as I installed it. "Holy shit this is using 6 fucking GBs?? Eh it's okay I trust" again said my Microsoft fanboy self. Finished installing, makes queries and it works. Cool.

Go to run Sql server again next day and get an error (nothing displayed, just a box pop up and then a crash) I use some Google skills. Change a bunch of shit and still it persists. "Just uninstall it and reinstall again" says my prof. I do so except random errors during installation saying Sql already exists even though I just uninstalled it. "Maybe it's some registry keys messing with it!" do some digging, remove unneeded registry keys and try again. Installation finished but a whack of features say failed to install.

I sit and try to work this shit out for the next four hours (not paying attention to my class) and still can't get Sql to completely uninstall itself. I try iobit uninstaller, command line uninstalling, fucking everything but still not working. Slowly my fanboy side is wishing that the windows symbol on the back of my machine was an apple.

I ended up having to backup all my files and reinstalling windows to get it working properly. Holy sweet fuck. The worst part is when this class is done ill probably need to reinstall yet again to save the 6gb it's sucking up. So if you're not sure whether you need something as heavy as Microsoft Sql server or not for your application, don't use it! It's a fucking virus that is super difficult to remove.

Tldr: life long Microsoft fanboy becomes apple convert in a day of using Microsoft Sql server.

How do you guys/girls explain to potential new customers that you can perfectly work in a structured business environment and follow the rules, but also that you're assertive enough to oppose desicions being made based on bias, misunderstanding, fanboyism, or grave stupidity.

I just got informed from a freelance position that they would have hired me if it were not for my 'rebellious nature towards customers'

I don't oppose customers, i oppose stupidity unfounded.
Example from experience
> me working in a helodesk support position, all windows computer.
> new mgr comes into office, is a douche and complete mac fanboy
> wants all computers that are FINALLY working decent for some time in the entire department replaced with mac's... Back at 2010.
> whole team, even disliking microsoft themselves, are telling mgr that's a bad, dangerously dumb idea, expensive too, different OS, different software mgmt making, back then integration microsoft and apple was beyond diarhea... Several other issues the senior devs and admins pointed out

>mgr: 'but aple is soh much better, like a billion times better, hurrduurrrrr'
His decision passed somehow to the board..
> All stations from our customers get changed...we don't get a single machine to try out problems because overspending
> we are most of the time unable to help out customers because we still have pc's...
> mgr asks team why performance drops after 1 month
> we compared performance graph with his starting date of mgr, see clear drop after mgr's plan implemented...
> board stilll stands by mgr, gets praise for 'bold changes in the company', but appears to be some associate's son
> two main seniors leave after 15 years of employment, in three months, 80% of staff leaves.
> we canr fix the problems, we are not dev's , we get shit from all sides, i was still a junior in the industry so i worked as a slave inside that job.
> eventually get fired due to 'bad performance'
> mgr loses entire team... 'Hey why don't we outsource this dept to south africa, it's a lot cheaper! '

now that company is an it hellhouse where everyone get clinically depressed from sitting atbtheir station...
This is what i wish to oppose!

How to make that clear!