"Financial damages".
So what? Causing someone financial damages isn't illegal. Your boss causes you financial damages when they fire you. Your competitor causes you financial damages when they offer a discount.
If Micay was a 50% owner, sounds like he didn't do anything illegal. Immature maybe, which simply puts him at parity with the other party involved.
> Immature maybe
Yeah, that’s the issue. I don’t want people who behave immaturely, impulsively, or vindictively, having a key role in something as important as my phone os. I want stability, maturity, and thoughtfulness.
Things aren't only bad if they're illegal. There's plenty of bad things one can do that are perfectly legal, and plenty of good things one can do that are totally illegal.
Deleting the signing keys for the sake of protecting ones users is the mature and responsible thing to do.