[eesmith]

Are you trying to heat up this already contentious topic by name-dropping a gruesome premeditated murder? Would no other example work?

I'm not asking about a change in invisible internal policies that didn't affect Twitter users.

I'm asking about examples fitting Khaine's claim that Twitter's policy was that "to wear a mask to protect yourself from COVID was a mistruth".

That's an external observable. And it can change over time.