Whatsoever algorithm they use is some variation of taking the diff of engine moves vs. historically played moves vs. moves played at a certain rating. This is n

Whatsoever algorithm they use is some variation of taking the diff of engine moves vs. historically played moves vs. moves played at a certain rating. This is not complicated, contentious nor does it sound like it is worth of a trade secret. Even if they do wish to use a private or proprietary standard to ban or suspend a user officially, they can still use a public standard (can even publish the code on Github for example) and show a standing statistic on a player's profile page using that public algorithm.