I honestly think the forum hasn't changed that much (at least compared to when I joined) but there was a little period in between when things were a lot less heated, leading us to believe that would be the new norm. Contador had retired, Sky was defeated, Nibali, Valverde and Sagan no longer what they used to be and Pogacar and Remco not yet the superstars they are today. Now it's back to fan wars between Roglic and Remco, MvdP and Van Aert, Vingegaard and Pogacar.
Some of these fan groups are becoming really obnoxious and the old guard watching them from the outside are annoyed how the forum is becoming such a mess. But in reality the only difference is that the last time fan wars were waging, that old guard was right in the middle of them. Take a look back at the Contador thread and tell me that was any better than what's going on in the Pogacar thread. I really don't think it was.