Even with the loss of the in-game RNG, you can just roll a 10-sided dice when you’re playing online. There’s simply no way to prevent its use except in an in-person environment, so there’s no sense making rules against it in online play, imo.
Now, the ABDT tracker is a bit different, since it’s summarizing something that you’d ordinarily have to do pretty consistent and time consuming calculations for. Ultimately I think it’ll probably not be as useful as people think, for a number of reasons. Tendencies across different gamestates (when KD, in Neutral, in early game, in mid-game, in late-game, with known Aces, against known Aces, with likely Aces, against likely Aces, with TD or other abilities up, etc.) are going to be different, and averaging them all out is probably going to give you worse information than your own game sense would.