There's average looking tall white guys all over the place that have success with women. The fact that he's tall pretty much puts him a few levels above a short average looking guy.
Most incels that never ascend fail in more than one area. If you're truly ugly, short, awkward/quiet, and didn't get a career started that's when you really gotta worry about going through your entire life as an incel. If you're tall and your only problem is you're 5/10 instead of 8/10 you don't have to worry, you'll ascend sooner or later. Maybe you'll have to work a little at it, but you're not cursed with insurmountable problems.