I understand your point. From my perspective, many homebrews end up falling into existing archetypes, whether intended or not. When I’m in a game, I generally quickly try to determine my opponent’s strategy. I do this so I can play accordingly. When I see a Hayley install anything that fuels program installation, I assume it’s a Chameleon build. When I see Noise install Pawnshop, I assume it’s a traditional Noisecakes. This is done on my mind for my own reasons. After games it’s common in my meta to talk about your deck with your opponent; this is where it may become apparent that they were playing certain tech or a different build than I assumed. It is rare that I was completely wrong about the archetype, though.
tl;dr I try to classify my opponents deck as quickly as possible with the information I have, so I can play accordingly. Does this mean I sometimes get blown out by Komainu in Weyland? Absolutely. More often though, my assumptions are accurate and I would like to think give me an advantage against my opponent, or at least, remove any disadvantage I would have had by being completely in the dark about the opponent’s strategy.
I think it is important to distance all ego from yourself when playin ANR. This includes ego towards your decklist, towards your play, and towards your performance. I understand people being proud of their homebrews, but understand that when someone else assume you are playing an established list or archetype, it is unlikely that they are attacking your deck building skill.