BRD barely has better rDPS than MCH despite having raid buffs, and MCH has way better aDPS. Then you have the dismantle tax + MCH being simple compared to most other jobs.

I don't think there really is a problem with MCH dps, you can't just call it a problem because it's the lowest performing job lol.

On top of this, parse community bias is showing strong. There are just not many MCH parses, meaning people who "care about performance" are avoiding it like the plague. You aren't seeing the same expression of skill in MCH because people just aren't playing it.