Yasuo Syndrome

I've always seen the hate for yasuo players, but i never understood truly what it felt like until today. Ill start off by saying that i am a yasuo main with 143k mastery points on him.

I know a lot of players do bad on him including myself, but when i see another yasuo player who has more than 3x my mastery and having little knowledge of what he is doing really urks me. We didnt lose just because of him though because we failed to kill their back line while they slowly widled us down until xin was strong enough to jump into our team. But for him to build bork upon phantom dancer while also running the attack speed sub rune got under my skin. While we are trying to defend mid tower he is sitting bot and cant even 1v1 their garen under our tower who was shut down for over half the game. I asked him while he had the recurve bow why he had it, in which he responded "you can probably guess" in which i responded bork is not good on yasuo (because its wasted attack speed).

Why do people do this? If you love playing a champion wouldn't you try to do some research and improve on that champ? I honestly couldnt tell if he was trolling or not because after i pressed him on what the heck was he doing, he responded along the lines of "I should probably guinsoos." After which i went through his recent match history and built dead mans on yasuo.

Do you think my hate is justified or am i being overeactive / just a shit person? What are your opinions on yasuo players?