The admin also posted this sometimes back;
Having moderators put a reason for every autoban is a waste of mods' time.
Exactly and usually when members were banned because of rule breaking, they do break multiple rules.
I think the reasons are clear because on the platform I am working for, when moderators ban users, they simply add a kind of general ban message. Banned users will play innocent and ask what are details of my ban: which rules I broke, what trades caused my ban, etc.
In some cases, I have to file escalation support ticket but at the end of days, such users break multiple rules and it makes sense, a platform does not break their reputation just because any arbitrary ban on a specific user.