Yes. It is a problem and I care about it.

Rewards come from a common reward pool.

Everytime you or someone else upvote something in the Steem blockchain it is a request for the reward pool to set aside a part of that pool in a proportional way of the VESTS you own.

It is ok to upvote yourself in your posts. At least while you get little reward everytime. It is a way to ensure that you will get a little bit for your work.

But comments don't require too much work -although some of them do- so it is not ok to self-vote yourself.

That is why it is not ok for you to dry the reward pool for just a few words -I am not saying here anything about those words- while some other people who put a great effort into a post with much more that 500 posts get less STEEM just because you wanted to be rewarded for the first thing your brain thought.

Remember: Reward Pool is finite and you will get a part of it. If you get more, then other people will get, proportionally, less.