This is what I don't understand about this. If someone wants to CureBot, that's fine, it's their sub. But they are NOT entitled to a group outside of the Duty Finder. Party finder is for like minded people trying to do content a certain way. Their Group, Their Rules (within the boundaries of the game). So fine, be a CureBot, but don't be surprised if you don't get many groups.
This already exists. It's called Normal Mode. EX, Unreal, Savage, and Ultimate exist for a reason on the broad spectrum of difficulty. Harder difficulties require more effort out of players to complete them.