Agreed. Unfortunately WoW is trying to cater to a few distinct groups of players. And after 19+ years of game lore it's tough to balance the goals of each group and leave each satisfied. Blizzard got scared when the player levels reached over 100. It's a daunting number for new players. And if you are buying the game for the first time you don't want to be stuck killing boars in Elwynn Forest when you were promised on the box to be in Dragonflight or whatever the last expansion happens to be. So, Blizzard condensed the leveling several times. But this makes it difficult and confusing for new players who are playing for the great questlines and lore still available in every part of Azeroth. I wonder how many players will never experience the Linken quest in Un'goro. Or the Pamela Redpath quest chain in Eastern Plaguelands.
I almost wish Blizzard would introduce a highlight reel of great quests on the Boards in the capital cities. They would go in order based on old level requirements of the greatest quest chains that shouldn't be missed. Mobs and equipment scaled to your level. You could string them together. Once you complete a quest chain you are ported back to the capital city to pick up the next in the list (or hit a "play all" button and get ported from one quest chain to the next as you complete them).