The problem with unjustified bans due to some algorithm is also: These cases might not even be a close calls like: “oh yeah this person did something that is in the grey area of what our policies state. I will ban him but he might interpret things differently.”

No if you enforce your policies strictly by (machine learning) algorithms it could just be a matter of misinterpreting a different language, slang, irony or something else. Which makes these bans even more infuriating.