People clamoured for Vanilla WoW to have official servers, and played private servers that recreated the experience of that time, for over 15 years. Every time a private server died due to admin team drama, or getting a C+D, or turning out to have shady donation skimming, whatever, the players would move onto a new 'fresh' server. Relevelling was not a concern for them, because they loved that version of the game THAT much. There are players who have not only played Vanilla WoW's levelling process over and over, but as the same class every time.
People asked for OSRS to be made after Jagex made the disastrous update 'Evolution of Combat'. That was 10 years ago too.
To have that amount of passion for something is to be commended, not belittled. If everyone who had passion for what the game was, and no longer has passion due to what it is, left the game as you recommend, you would create the circumstances for the start of the 'death-spiral of playerbase leaving' that causes MMOs to fade out and die. Also, telling someone to 'take a breath' when they're literally just expressing their opinion, quite calmly imo, is exceptionally patronizing