Alright, so you guys are making me work today hahahahaha
Basically, the better proteins you have the better the hop oils can bind to them. So yes, chilling quickly would add a benefit.
Secondly, yes, not EVERY brewery uses glycol, but the risk involved with not instantly chilling your wort is too high commercially, so that is what most breweries will use. I know a brewery that uses a plate style chiller system, but the plate is so large that it's just as good as glycol. Also, technically, breweries in Australia are supposed to register their water consumption (everyone lies) but still, yet another reason anything but glycol becomes an issue. Our system did use water for some of the chilling, but majority was glycol.
All this being said, homebrewing is about using what works for you and what you can use for your system/process. So if no chill is what you prefer, or what you can do for your system, it'll work. But like brewing salts (which only a minority of brewers use) it does add to a better overall product. The difference isn't huge, but in my opinion it definitely makes a difference. Think A to A+.
I know you all make great beer!