He was kidding, really you need to lighten up! Sometimes humour is used to diffuse tension.
About tastes, it's okay to be a fan of a series but not of a specific entry. For example I am a Zelda fan, but I didn't really enjoy Twilight Princess as much as Ocarina of Time, or I didn't enjoy Sunshine as much as Mario Galaxy. I believe that some games in the series were better than others, it doesn't mean I shouldn't be playing those games.
About flaws, even if you don't see any, it doesn't mean others don't. It's like how my friend loves all the movies he watches, and doesn't see the flaws I see. For that reason, I don't really rely on him to know what movies to watch. On the other hand my other friend is very savvy in movies and I rely on him a lot to get an idea of good movies to look out for. I love both of them, but the ability to see quality is something that is important to a lot of people. I am not saying that TLOU2 is not a quality game, I see the quality. But the flaws are strong enough to show that some mistakes were made, and it's only a good thing for the team to take note so they can improve on the next one. Story was a big aspect of the first game, so in the context of a series if the story has issues it's only normal that fans talk about it and ask for better. It doesn't mean the person didn't get the game, they probably very much got it, and heard all the explanations. They just probably don't agree and would like the team to note and improve.
About second and multiple viewings, I fully agree with you. I personally loved the 2nd matrix movie upon subsequent viewings. It's probably true here too, but it may not fix issues that might be ultimately flawed for some people, and that's completely okay.
I get what you're saying. Could it be people are way overhyping expectations as well? Because I have been playing through the remaster and i'm not seeing anything done better. While we are talking, can you point out some flaws you cam across?