What exactly are "trending" posts anyway? How do you define trending? Likes per second for the last 24 hours? That plus maybe sats zapped/day?
It may well be he is doing the work to get people to put him in that position. Your irritation may actually be caused by the stupidity of people or the fact that you don't get that amount of value from it. The photo is nice though.
There's no second guessing what the market says. I'd say only if the definition of trending was unfair there is a problem. Is the source code of the site available to read?