Those who have experience with such projects predicted very accurately what will happen.
1) The basic service will mostly stay up one way or another. Because otherwise all is lost.
2) Many auxiliary services will start degrading or going away. For example, yesterday search autocomplete was disabled after it started autocompleting everything in obscene ways.
3) We'll experience more frequent outages and glitches (and we do).
4) His velocity will grind to a halt. Meaning, he can't ship new features at depth, only superficial crap, and things that were started long before he bought the company.
He's also deeply in red right now, after losing over half his ad revenue and the 600k or so blue checkmark subscribers are netting him about 1% of what he lost in ads.