Problem in the long run is that it doesn't matter whether or not Twitter believes they are hateful. Heck, it doesn't even matter if the person you're responding to thinks they are hateful.

For Musk to not lose gobs and gobs of money, it only matters whether advertisers, in their sole estimation, consider those people hateful. The guys with the nine figure ad budgets will almost certainly fall on the "cautious" side of that line.

The only thing that will help here is finding small, less PR minded brands or businesses to replace the players in the nine figure club. This won't be easy, but I think it is the only reasonable way forward to create the kind of Twitter that Musk seems to want to create. Having worked at "DDB Need'em" long ago, I'd set his chances of pulling that off relatively low, but I don't think it's impossible.