Well maybe they do make less, but they do get a lot of good will, @liberosist is new to me but @pharesim has upvoted a good number of my posts, of course at a low percentage, so I figure he does distribute his votes to a lot of people which I think is great.
By the way I do upvote my posts, my voting power is low so I get about 10 cents and I post about 2 or 3 times a day, so I don't think I do much harm, and also with people up voting so little nowadays I have to upvote my post so it can get at least some more viewers, because at 0 votes it's lost in seconds. And I do up vote a lot of posts also, not much money but I guess every little thing helps.