@signalapp I hope you support some kind of optional verification in Keyoxide style.
E.g. "this Signal account verified they control this Mastodon account and this website", but with better wording so people don't just set up lookalike accounts and websites, but it still works to deter impersonation.
The main reason I use Keyoxide is because I got impersonated in Wordpress.org blogs (which do not provide any kind of authentication). AFAIK the only way to prevent that in that platform is using PGP signed messages, which are cumbersome, or using plugins that require login, which are annoying.