Exactly!
My opinion is pretty much everyone I see overtrains arms. They get plenty thrashed during back, chest and shoulder days. If you can swing a split that allows a bi/tri only day, I bet you’ll see some results. Also, the overtraining I see is simply too many sets and little to no real focus. Everybody (except me it seems) wants big arms. So I see these guys at the gym throwing huge weights around with no regard to what they are doing.
I always say that there are dozens of ways to do things right but hundreds of ways to do things wrong.
To each his own but my clients have always gotten results.
I’ve never curled over a 40lb dumbbell and maybe 120 on a bar, maybe. I’ve always been about intensity and that mind/muscle cliche’.