I’m currently leaning towards Twitter tried a bunch of things to stop this and hootsuite got caught in the fray

Or maybe it was a multipronged attack that included social media management software and OAuth

but the hilarious most visible solution is that Twitter now disabled all verified accounts

and they should keep it that way

You're probably right. After reading through https://twitter.com/TwitterSupport/ it looks like Twitter has been disabling some features. And according to https://twitter.com/louanben/status/1283518716118958080/phot... the @TwitterSupport account was also affected. I doubt they use a system like HootSuite for that account.