Kbin is in really early stages, but if it's given time and resources it could be really good.
If you use a platform, that gives the platform's developers influence and power. That's why for example Eugen was being interviewed on CNN etc.
" Mastodon on the other hand has plenty of toxic instances and yet you're both on and promoting its use."
It's not about toxic instances existing, it's about toxic instances being run and promoted by Lemmy's developers.