>What makes you think this was designed as tracking system rather than anti-abuse feature?
Which goes to the crux of the problem: the way "online abuse" is defined presently, it enables platforms to introduce virtually any measures in the name of preventing abuse[1], and people gobble that up, heck, even cheer for it. "Think of the children" got an internet-era make-over, and it seems to be working.
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[1] off of the top of my head: requiring real names & verifying them via governmental ID; automatic take-downs upon automated requests from 3rd party; automated limiting of posts' reach based on language analysis; requiring posting under your own login; pervasive tracking that jeopardizes people under repressive governmetns.