What you claim is factually inaccurate. My forum account has been TL3 continously since 2019, meaning no bans. See:
https://us.forums.blizzard.com/en/d3/g/trust_level_3?order=added_at
I can not recall any proof of this being shown by you or anyone else for that matter.
Could you share your proof that someone (a real person and not some imagined hypothetical) has played D3 22+ hours per day for several consecutive months?
There is a simple explanation that accounts for extreme hours of D3 playtime in almost all circumstances.
Another ban wave would be nice.