Leveling is the only part of wow I traditionally had unambiguous fun. Ideally, I personally like to stretch it out as long as possible. Historically, you could do that via disabling experience but that NPC broke with Dragonflight.
I get for a lot of people leveling is a chore and they just want lots of alts and what not. But I do think the game should restore or add an option where people can opt in to less experience--so we can experience all of the four zones/every quest/new dungeons/rares/etc before hitting 70.