The problem with catering to "casuals" is you're already going in knowing they're not going to play a lot, even if the content is good, and there's nothing wrong about being a casual player. That's what a casual is, to be fair. They're not dumping hours into the game. I agree they shouldn't cater to streamers. I don't think they are tbf. They (currently) have catered to hardcore players, of which much of the content creation community is, but it's not just exclusively streamers. There's a balance to be struck and I think it's absolutely fair to say they've swung it too hardcore this go round. Things that aren't Master/GM content need to be reigned in. Regular raids and dungeons don't need power delta's. Mythic needs to be more engaging than peek-shooting behind rocks for 10 minutes. More examples I won't list but I agree with the sentiment, even if I don't think it's that exact group that's the complete problem.