It was just a matter of time that something like this came out but it's been more or less known since the Davydenko-Vasallo Sopot match. It's just so easy to fix a tennis match and the reward can be huge. The ATP has been trying to hide match-fixing in the elite to keep the sport look as clean as possible and only really targeted a few very low ranked players. So it's probably for this reason why seeing so many top-50 players being suspicious is surprising, as match fixing is something that had been connected to the ch/futures level. The thing is that you can't prove that a player is guilty 100% sure unless you can actually prove a direct link between the player and the fixer. Even if the match results and betting patterns for a player look suspicious you can always argue that those losses where just a coincidence. But the numbers don't lie and the way the
analysis has been performed it's clear that many players have been involved at some point, and probably more than the 16 they are claiming since it's harder to catch a player having done it just one or two times with raw data analysis. I really don't know what will happen from here but as I don't seee concrete names being officially released by the ATP anytime soon, I wouldn't be surprised if this doesn't really go anywhere.
There's actually a sweedish website that has an artcile from 2011 that cites a black list of players heavily suspicious of match fixing (prior to 2011). It's in fact been posted in r/tennis recently and they're claiming it's a reliable source in Sweeden so I guess there's some good analysis behind it. And that list definitely lists some important names including ATP and WTA players.