I never said that girls didn't find muscles attractive. What I said was that it is actually pointless to survival, and by no means does getting large muscles at the gym make you a tough guy or an alpha male. If anything, it might mean you have too much free time. The same way that getting tattoos doesn't make you a tough guy.
The fact that (some) girls find large muscles or tattoos attractive is independent of the facts stated above. And what's worse is that some girls actually think that large muscles and tattoos (and beards) make a guy tough. It fools the subconscious regions of their hamster brain.
I wouldn't say muscles are pointless to survival. Okay sure we don't spend our days hunting mammoths anymore but in any physical confrontation (heck, any physical labour you need to do over the course of your life too) muscles are very useful.
As you say, muscles alone also don't make you tough if you're just lifting weights all day and not actually training for fitness.
HOWEVER, muscular men should nonetheless be respected. At the very least they have put in work to attain that level of hypertrophy, at the very most they are physically stronger than average and may well genuinely be tougher in a fight too.
There's a reason crime bosses often run gyms and recruit the men in them.
I know a guy who's about 6'7" and used to be a street brawler in his youth, and then he became a doorman (ironically). He's not roided up but he's done martial arts for 20 years and his physical strength and ability certainly enabled him to survive situations most people would not have. A no-holds barred fight on his own against 3 men in an alley, for example. Certainly not a guy I'd mess with, certainly someone I'd say is "alpha" and certainly a guy who is hard as f*ck.
(Also it goes without saying: in any given fight I'd rather go against some small guy with no muscles than a small guy with huge triceps).