My worst dev experience in 2021 has been a PHP-based CMS developped by lobotomized, single-celled organisms incapable of coherent thoughts.
A CMS even worse than WorstPress.

200k lines of "code", no use of packages, multiple entrypoints, no namespacing, all dependencies loaded by "include" at random places and everything is dependent of every thing else... a complete mess.

One could call it the butterfly effect CMS. Adding a space could completely crash the application.

At this point I've almost developped terminal eye cancer...

"Biggest challenge you overcame as a dev?"
Overcame? I wish! I'm in the midde of fixing the worst legacy code clusterfuck I have ever seen...
Yes, it's even wayyyy worse than WorstPress...

There are days where my coworkers hear profuse laughter coming out of my lone bureau, some of them might already be thinking that I've gone mad. Maybe I have... bwahahahaha

Imagine what PHP could be, if its native API wasn't still based on a C-like pile of turds, abused by below average coders...
On can just dream 😢

I like PHP a lot, but man, the PHP job offerings I've seen...
99% WorstPress, Typo3 or Joomla in companies that exist for 15 years and have just recently started to use Git.
Even with a 6 figure salary I couldn't bear the desolation of working for such single-celled organisms.

In the previous company I've worked, we've had about one customer every 1-2 months that had his WorstPress website hacked.
It's a horrible CMS and there is no argument that could convince me otherwise, not even bribery.

Luckily enough for WP, it's not the worst CMS I've encountered... that award goes by far to "The CMS Of Doom™" (name changed to not dox the incompetent company that created it). Fucking bastards.