You said that he is aiming low and hitting top. That is exactly what most top breakers do, period.
It's just a matter of follow through as far as how it ends up "looking." If you hold the bridge hand over the cue, your cue will go to the bed of the cloth. If you open your hand, the shaft goes up. Both are very common among pros.
I think if you look at Colin Colenso's video on his power break, and his explanation of "breaking upwards," I think that's pretty much what da_rookie is doing.
I don't think you realize how much top most pros get when hitting (and getting) that squat break. Watching the TAR matchups using the measles ball, it is pretty evident just what that cueball is doing on the best squat breaks: spinning with follow in order to stop and squat.
Fred