Who exactly is asking for harder raid content?

Classic's success showed that players like easy raid content. You show up, smash some bosses, grab some loot, and trash talk in Discord. It's fun, it's easy, it's even relaxing.

So who exactly is asking for these raids to be made harder? Why are we suddenly facing Season of Mastery changes when SoM was, by any measure, a complete failure? Sure, top end guilds clear this stuff on day 1 and moan about how easy it was, but guess what, most guilds aren't top end guilds. And woe betide the casual pickup groups out there.

Flame away all you like, but Classic players like easy raid content. If we wanted challenging content we'd play Retail.