Comment by wahnfrieden

I was mistaken. GPLv3 only offers a provision to require it. Firefox also requires that the name be treated as a protected trademark. I don't know how clearly one gains rights to names of open sourced projects with typical trademark policy though. I've tended to change the name on my own forks if I am not forking just to contribute upstream, out of caution for trademark (even if unregistered) and general reputational hazards of becoming a public face for someone else's project under their chosen name.

edit: Looks like the reality is quite complex: https://google.github.io/opencasebook/trademarks/#license-te... this goes into detail on each popular license