Greyed out comments are still legible. I regularly see people saying things like "I'm sure my comment will be flagged", and days later, it just isn't. Sure, there's a popularity contest - unless you get rid of voting and display-in-vote-order, there always will be. But I would say that paying much attention to that rather than the contents of comments represents a personal choice to be distracted by the noise of the "contest", even while the signal remains in plain sight.