How would we know though?
He’s an A-lister and he’s represented by a big talent agency and production company.
They can quite easily squash stories, simply by refusing media access to other stars or productions on their roster.
Hell, for all we know he could be on Epstein’s list. Or he could be secretly donating money to donkey sanctuaries. Who knows?
People knew about Harvey Weinstein, that was an open secret. There are indications, Keanu displays none of them. There are also far too many anecdotes from random people saying how nice he is.
Like I say, I’m sure his PR people help, but he’s probably one of their easier clients.
We might not know for certain, but we can say with confidence that tales of his character are probably true.