It was mentioned a number of times too that homebrewers are not necessarily looking for "long shelf life". Yes we want our beer to be delicious and fresh-tasting when we tap a glass of it. My beer is kept cold, carbed and kegged in an on-deck fridge and then it comes to the taps. It has not gone through any travel, it has not been mishandled, gone from warm to cold, back to warm again, etc. It used to be very rare that I would taste anything even remotely close to oxidation in my beers and that was if I tapped beer into a growler or bottles and then let it sit for a long period... and I pretty much never do that. I have a lager on tap right now that was brewed in the fall of 2021 (long story) and it's delicious and not oxidized as far as I can tell.