Also you really can't compare anything to Google+ cause they used every trick in the dark pattern book to convert every Google and YouTube account to be a Google+ """user""", whereas Threads requires installing an app and going through the (short, if you have an IG account) sign-up process.

YouTube constantly harassed you to convert your account to be a Google+ account, and there was a point where commenting on any YouTube video would automatically make a post on Google+, as if you shared the video with that comment as a caption. They're totally not comparable.