Probably tens or even hundreds of millions*

I joined shortly before Musk takeover and it was already a dumpster fire, so I made a script that searched for spam and fascist dogwhistles in the background and preemptively blocked them all 24/7 up to the rate limit. Two years later and well over 300k blocked accts later I gave up and deleted the account after seeing it barely even made a dent in the threads I was reading there.