This part is true. It’s simple human nature. People will always take the path of least resistance, even to the detriment of their own enjoyment. And calling something ‘optional’ is usually just a silly argument. Something as impactful as dungeon finder is not optional.
But it’s part of Wrath. So…it’ll be in Wrath Classic. The damage it did (which was community destroying) doesn’t really matter. That community doesn’t exist anymore anyway. But you can always play eternal Classic and the soon to be eternal TBC servers.