Well like you said, self upvoting by some authors after a few minutes of posts maximizes their reward.

I think its a personal things most people who their upvotes worth like $70 always upvote their post, because they came for the money, on the other hand, some people like to feel the community has to be considered, as much as this message is being preached it all boils down to these individuals and their mindset which I hope one day, they can change