X expanded its group chat member limit to 100 people last June, then again to 200 in August. It's now boosted it once again, in order to provide comparative chat options to other apps.
Over the last few years, more of the 'social' elements of social media apps (i.e. human-to-human engagement) have been moving out of public view, with fewer people posting to their social feed, and opting to share updates with enclosed groups of friends instead.
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