Because they have not experienced the cruelty of what they are supporting. . . yet. The moment they do, they’ll cry and whine that it’s affecting them.
See Florida stopping permanent alimony and the blow back from Republicans that are shocked it’s affecting them.
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.
Terrible is a bit of an understatement. Men complain about bleak social and economic prospects only to be meet with insults that go right to the metaphorical jugular of every mans ego.