I feel MUCH better when I just accept that there were 2 fantastic seasons and 5 with mostly alright episodes and some bad ones. Same with Star Trek. I simply do not care anymore what gets shat out and rather just treasure what we had in the past and rewatch it every couple years.
After a while of being sad you just deal with it and move on. There's still a lot of life in the "fandom" and even if it's not the same as back then, there are still things to enjoy.
Apart from that, there are also other nice things in life to enjoy.
The biggest middlefinger to those who ruined it is when you stop getting phased by their bullshit and move on as if their brainfarts never even existed.