Those particular tweets weren’t exactly yell-y, but if you add up all the people tweeting him stuff like that and worse, it’s a dull roar. Just telling him you think the show sucks and you’re not gonna vote for it isn’t exactly constructive critisism, which I’m guessing is what he was getting at when his response was just as juvenile and pointless as the original message. Sometimes he should just let the comments pass by, but I get why he feels the need to bite back sometimes. Even if’s not nice to receive messages from people who think your show is going downhill, I’d think he’d be more appreciative of something like, “I miss such and such on the show, like in season 1,” instead of, “bad and getting worse, sorry. Give us a first season again.”
Realistically though, every show’s first season is unique, just by virtue of being the first season, when everything is shiny and new and they’re introducing you to the story and the characters for the first time. The following seasons will always be different as the story expands, and as viewers latch onto different characters and start formulating ideas and expectations of what they want to see next, based on what came before.