> Do please be specific about those.

Here is one example: It's likely that we will never know who was behind the attempted backdoor in the xz library, which was almost successful in making a huge number of Linux installations worldwide vulnerable to remote exploitation. [1]

That malicious contributor is protected by online anonymity. Now, I know that it's probable that a state actor was behind "Jia Tan", meaning they could have been supplied with a fake ID as well, but that's still a higher barrier.

I don't think (and have not stated) that anonymity is worthless - it definitely is, especially if you're persecuted minority or under other kinds of threat. I just don't think it's helpful to pretend that it is completely unproblematic.

[1]: https://tukaani.org/xz-backdoor/

> > and justify for the class why those involved couldn't have voluntarily done away with anonymity for that particular interaction.

The project in question could have chosen to verify identities if they deemed it worthwhile to do so.