Exactly, which is why I had no problem just removing it from existing completely to begin with. In all the games I've run, the only person with the option for doing it reliably happens to be me (as PCs go unconscious much more than monsters do). It also curiously balances out certain monsters - like Jackalweres who are just not as stupidly overpowered with CdG removed.Coup de grace has come up so rarely in my games that I find it isn't even an issue.
Additionally it heavily pings back powers like sleep and other unconscious effects. Which are usually either completely useless or absolutely broken. Sleep is still a very good power for a multitude of reasons even with this - given that being able to impose no actions + -5 penalty to all defenses (not to mention falling prone and granting CA) is just brilliant by itself for any power.
It basically does nothing significant and just removes some abusive uses of unconscious. Unconscious (and therefore helpless) is still the worst possible status effect to get. It also means that I don't have to wonder how someone "helpless" can continue fighting while being brutally attacked by anyone (in the rare powers that just inflict that condition alone).