I haven't read a lot about that issue but if I understand correctly a malicious actor had write access to the repo, and yes signing tags could have prevented th

I haven't read a lot about that issue but if I understand correctly a malicious actor had write access to the repo, and yes signing tags could have prevented this push to be problematic (I don't know if they're signing content or not). It's always good to check signatures especially when we have the tools to do that automatically