The dream of Mythic is basically dead... Frost Interview with Yoshida

[Bruenor]

That... has absolutely nothing to do with small-group granularly progressed challenge mode content like M+ being available at endgame. Are you sure you're referring to what you intend to?

Having had these discussions over several years in the game, I can only go by the vast majority of responses I have gotten on the WoW forums. It starts that players are only talking about what happens in Mythic+. Then the argument starts that we need to do the mythic skips in heroics so we have players ready for mythic+. Then i gets down to we have to have people learning how to skip and how to mass pull in starting dungeons. It's not just my take, many of the Mythic+ players on the forums are open about this is how it is - they also claim the entire game is ONLY about Mythic+ dungeons and Heroic raiding. Most complaints about Shadowlands are there is only content for the hardcoire -mythic+ and heroic raiders.

It's also why many long term players like myself haven't really run dungeons in a few years and / or have quit the game. Between DPS pulling for the tank to speed them up to simply vote kicking players for going to slow the impact of a timer has been very negative on the game as a whole for early WoW players.