If you queue really early in the morning or late night, then there arent any teams playing, maybe one but that's it. 90% of the teams u'll face will be wintrading teams, so ure kinda quing into them by purpose, if wintrading wouldnt exist you wouldnt get any queue pop. Would you still be playing at these times? No
So saying that you only play nighttime is just dumb, cus you wouldnt be playing if it wasnt for wintraders. Which makes wintraders the soul reason you queue at these times, which means you're abusing somethings that's bad for the game and should result in a ban.
Can't tell if you're trolling or not. Just because roads experience peak traffic at 5pm doesn't mean no cars exist on the road at 5am. Logic is not magic and isn't particularly difficult, this should help you. A sinister application of your logic would be to condemn eternally a wife who contracts HIV from her adulterous husband.
Also, as anecdotal evidence has shown, you didn't have to queue into wintraders to receive the ban. On the other hand, you could queue into wintraders for 400 points and not get banned. FYI.