people dont 3bet bluff a lot at these stakes
regs do not 3bet 5bet these positions with AQ, a lot of regs don't even 3bet 5bet AK 100% (probably correctly so)
the average fish is passive and the average fish is not 3bet stacking AQ here or JJ for the most part (note i say average)
If you 4bet and get shipped on and assume his range is QQ+ AK then you still do not have a profitable call, 4betting AK and calling is worse than 4bet and folding, which means you are essentially 4bet bluffing
with AK vs most in this spot.
We do NOT need to 4bet AK here, regs will not realise and even if they do, this is irrelevant, they can't do anything about it.
Its just going to be a leak a lot of the time when you just 4bet get it in vs an unknown (of course its gonna be fine vs some people) but everyone is still evidently fobbing it off as standard, when it's a standard mistake if you consider the maths and if you have a good idea of what an average opponent plays like.