While Threads is federated social circles and communities will have time to form. Thread users will by nature of having the support of a corporate juggernaut, be the lions share of users on the 'verse. When threads pull the plug, the Fedverse becomes a ghost town overnight and everyone not on Threads will be forced to migrate if they want to keep their social circles and communities intact.
Here is an example of a corpo dealing a blow to an open source project. The article covers an example of Microsoft and Google killing a competing open source project(s).
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Also here is a blog post about how Google killed the Extensible Messaging and Presence Protocol (XMPP) using extend, embrace, extinguish.
It’s because tankies are just contrarians that use communist ideology as a vehicle to be anti-west / anti-United States (anti-liberal democracy). Tankies will defend any cause or ideology that is against ‘the west’ even if that means happily ignoring the blatant homophobic, genocidal and repressive authoritarianism.