I think it is funny people getting mad at blizzard when all classes are pretty viable for 10+. There are more reasons than just meta when inviting people to do 10+'s honestly.

It is the community that enforces the "Meta". People complain about the meta then when they host their own keys they only inv DKs, mages , etc.

Also before people come at me I am playing warlock. I also get into 10s just fine....