Maybe most readers know this already but it’s never a bad thing to remind people how to pour a beer. It’s the kind of thing you ought to learn in school but don’t. Thank the gods for the internet.
Note: I’m still not convinced by the glassware argument. I think it’s the kind of thing that people insist makes a difference because they’re paying money for it, when the actual difference is negligible at best. A bit like stereo geeks who want to tell you their solid gold connector cables produce better sound than the ones you paid ten bucks or.
But to each their own. Nobody needs someone like me insisting that their experience is invalid. If you like the beer, then you like the beer.