90%+ of people just won't read long posts, almost irrespective of the content unless it's in the niche they're interested. Whereas a meme or a joke is mostly welcomed by all.

This is definitely the case!

Any less and there's just zero economic incentive for me to post at all.

I am not saying that I can not understand why you do it. And of course it is your well earned tight to use your power however you like.

what do you think of that?

Difficult. I can understand your point of view and your motivation. But I also understand people who don't like the image of it. But, as stated above, I have even seen you upvote posts from unknown minnows which is great and kinda prooves you are not only holding the power for selfupvoting.

But also can you comment on the quality of my short posts please
Like with all jokes. I like some (the toilet-paper one for example) and some didn't even make me smile a little (like the one with hanging the telephone up).

I was just in the middle of reading that post actually, it's interesting.
Didn't want to distract you from doing so :)