Why do casuals act as if it's the end of the world when suggesting?

[Rolder50]

Maybe they ve seen the slippery slope that happened in wow where they begun pandering to high end tryhards and now casuals are treated as 4th class citizens with worthless rewards and gears literally 30 ilvls below max.

Not saying its something that always happens, i get the feeling WoW devs are tryhards themselves hence why they treat casuals and solo players like trash unlike ff14 where the lead dev even said he wants to focus more on solo casual players

Except that's the opposite of what happened. The game's subs started to go down when they pandered too hard to casuals with things like Dungeon and Raid Finder.