Seems like an extreme take. I think Buckley’s version is sublime but love Cohen’s too (which I’ve been privileged to enjoy live on a couple occasions).
I'm guessing this comes about as a desire to be heard causing a magnification of the opinion rather than the force of the opinion. If you feel like nobody takes notice of your moderate opinion one might feel like a expressing stronger opinion in the same direction might increase the impact.
I own both Cohen's track from Various Positions and Buckley's cover from Grace, which Google gave away for free to try to convince people to use its music store. I don't listen to the latter. Even if I didn't have the former, I still wouldn't listen to the latter. That's just how I feel about it, and I understand that other people feel differently.