I think you missed the point.
Why would people put in the time and effort etc on something that’s harder, takes longer, and only has a “chance” to give you a piece of gear?
ALSO we always know Mythic dungeons get nerfed, so why care to do them when they are harder?
Delves = the easier path, that kills any/all motivation to do the M+ path
So we’ll see lots of posts about people unable to fill groups, this is why.
I have geared healers and geared tanks, but I wont be joining the M+ for a while.