This SI article claims that the league is much more worried about the implications of Jones' actions, even though Billups is the much bigger name:
https://www.si.com/nba/damon-jones-n...mbling-scandal
It seems that the inside information about Lebron sitting out games came directly from Jones, who had befriended Lebron at the time, hence was privy to this info.
One of the big concerns right now is that the affable Jones cozied up to Lebron and the Lakers in order to gain access to lots of nonpublic information in the 2022-23 season, and they're afraid that the fallout from this will be especially bad. Even though there's a high chance Lebron knew nothing about this, Jones' actions have drawn the game's biggest star into this awful situation. Basically Lebron befriended and trusted a guy who was shipping out private info to organized crime, for purposes of illegal insider betting.
According to the article, without the Jones part, NBA execs felt they could weather the storm regarding Rozier and Billups, as these could be dismissed as isolated cases of two players and one coach acting badly. However, Jones' actions will make lots of people wonder -- how many other NBA insiders are rigging bets?
The only saving grace here is that Jones is not accused (to my knowledge) of rigging game outcomes -- only reporting nonpublic info to this cheating ring.