Not only winners but anyone that looks like to know what is doing.

By that I mean that they try to detect and ban any pattern that may be math / ML derived or arbitrage seeking.

I have been banned on an account that was loosing money (around -15eur) and the bet was 2.96eur - yep fractional bets is a big no - no.

So while it is possible to find better odds and win in the long run based on stats and ML with a 3% - 5% profit they will ban you before you do.