@me Yes. He originally didn't want them because they were pretty widely used for being mean on Twitter, but since committing to them he's wanted to address these issues.
But also, it does not actually seem like there's a way to do that without making it worse.
If he adds all these security features that only fully-updated Mastodon servers will recognize, then people will think they're safer than they are.
@fedilore calling non-Mastodon users could be solved by a forced "DM" from the quoter