What if someone doesnt want to do the new zones? And wants to max their gear in old lands.
What if someone wants a single player experience in a dungeon crawler and obtain max level rewards.
You could open this can of worms as deep as you realistically want. You cant appease every demand simultaniously, blizzard have to make their choice build their audience in the niche their catering to and move forward with it.
Throwing their game left right and centre trying to appease every player has proven to only kill the game faster.
Cataclysm was perfect proof that this game cant appease everyone.
It is fine, for you not to like WoWs direction. Thats the reason we have so much choice in the genre, and every game does it different.
Gw2 has no gear progression and raids largely for cosmetics
Ffxiv gears through currency shortening the gear grind process via raiding to encourage players to take breaks between patchs.
Eso has no level progression. But instead provides different set bonuses on new sets of gear to entice earning them.
What your asking for already exists in the genre, and we dont need 2 games doing content identically.
You really do not need to be an Einstein to understand full clear of mythic raidnumbers is not equal to participationnumbers up to killing at least boss 1.
Is the fact lots and lots of aotc raiders, want to do the lower difficulty so the grind doesnt exist and simply want to be able to take breaks etc etc inbetween patchs.
What you advocate for is to make heroic raidings grind longer by making guilds want to raid the content longer or causing a difference of opinon breaking guilds apart based on their cycle.
Mythic raiding allows aotc raiders which want to push further the ability to dabble without adding it to the content the other side play to get away from that grind.
Since removing the ability to see how many people are subbed etc etc, sites can only track those who sign up and have themselves set to public and not a total of everyone.
Theres no way to get exact numbers of who do and dont do content.