No it doesn't at all. The Steem rewards pool is limited. The more users on the Steem network, the less rewards pie for each user. The more people shit-posting memes, the less rewards for original content creators.

The distribution of the reward pool is not correlated to the number of users or posts. Thousands of people can post thousands of posts at zero value. The reward pool is rather directly influenced by the Steem Power put behind the voting.

Don't be fooled by the lack of critical thought in the comments - every person I've shown this too has immediately had the same reaction. This will be bad for the platform. Very bad. I seriously hope you reconsider.

If like you say, a lot of people are not enthusiastic about the idea, then I would guess that those same people don't usually vote on meme posts and thus should most probably still continue not rewarding this type​ of posts in the future. So I have a hard time understanding where the fear of having the reward pool being drained by meme posts comes from.

The entire argument sounds more like a desire to keep newcomers away from the platform than about the reward pool.

I used to hate memes, but I have developed​ a taste for it since I have been on Steemit. In fact, you may be surprised to learn that the first iteration here of meme contest was to promote Steemit outside of the platform. Now, from times to times I post memes in French for the purpose of growing the francophone community's interactions and that has certainly not stopped me from also doing long-form​ posts. These meme posts of mine always have small rewards which I think is pretty fair and indicative of their true value. And who's to say that people coming here for memes at first will restraint themselves to such short posts when they will realize that reasonable people like you and me upvote more and at a higher percentage when we read deeper thought posts?

No matter what is the content and the level of influence, what we might be looking for as a potential culprit (if we must absolutely point at one) for irregular draining of the reward pool is self-voting and/or circle-jerks and both of these are, I would bet, here to stay.