if someone in the group blames you for something, do you "accept responsibility" even if you didn't do the thing?

why or why not?

No. If I haven't done it, I'm !becoming someone else's scapegoat.

Actually had a situation touching on this very recently.

A person had fucked up - I called out the responsible one saying what he did && how he actually should've handled it.

What is interesting is how often people above you just shrug off their responsibility when they fuck up, though.

Depends on your role in the company.
Some roles are specifically there for taking responsibility.
For anything else: Of course you shouldn’t take responsibility for something you didn’t do.
I suppose I don‘t need to explain why.

I remember a conversation that we should stop calling the code from the previous developers as "their" code, I think my brain paused for a solid 20 seconds (I was complaining about fundamental issues with the codebase)

@BordedDev in Soviet Russia, the code is ours!

It depends upon motivation of the accuser. If its my boss that just wants something fixed I don't worry too much. He will realize it wasn't my shit when it was in the repo for more than 10 years.

This actually happened. I was working on something with a name that sounds similar to current crisis (some crash bug). My boss at the time says "You were working on 'similar sounding name'. It couldn't have been that way for 10 years." I went and found the crash issue. He was right. It wasn't in there for 10 years. It was in there for 15 years and he did it. Copy pasta errors.

So now the joke is when we find a bug: "Couldn't have been that way for 10 years."