Maybe it would, and maybe it wouldn't.
The meme comments are often the funniest thing on imgflip (in my view). I don't know whether reassigning the point value would have much of an effect on how people comment. I don't think that most people who comment have points in mind as their main motivator.
However, I guess it's possible that by making them 10 instead of 30, any people who do comment "just for the sake of points" might be less likely to comment, and therefore what would be left, proportionately, are the ones who comment because they had something funny in mind.
Caption this Meme
