The actual cheaters completely bypassed the new anti-cheat in about 6 hours. They had to update their cheats a bit, but are otherwise essentially unaffected. Linux users, Steam Deck users, and people who don't want to give a single game full hardware access, are all affected. None of those can play GTA:Online anymore, unless they mod the game to bypass the anti-cheat, which can be seen as cheating in itself, and could result in a ban.

The ddos attacks are likely being orchestrated by a small group of people or even an individual, it probably does not represent the vast majority of affected users.