Tubular upper control arms Issue

Looks cut to me

It's hard to tell from those pictures, but it looks like there's a rolled edge on the backside of the damage, as well as at the end of the groove. That's probably because the caliper mount has pushed that material out. If it had been cut I would expect all the edges to be sharp, no excess material.

A picture of the top of that caliper retaining plate would tell you for sure.

Either way, that UCA is hammered in my book.

What brand of UCA is that?