Solo focused, not solo only. It still needs groups to get some of its stuff. You're getting things wrong right off the bat, and you repeatedly get that point wrong.
You also argue that because it's not what raiders would want it's a waste of resources that should've gone into making them happy. Not everything in an MMO is raiding, so no not all content needs to be for them.
The only "dangerous precedent" would be caving to this kind of tantrum.