Well... That kind of things with Gems actually happens .. And it's terrible in my opinion. But it's still good that these gems are being created, as it can help authors to get more exposure for their posts. It's the readers fault for not upvoting the gems and only the gem-post.
And I'm aware that a bunch of people have less results than me and I'm truly satisfied with the great results I've had.. But I can't produce 2-3-4 post per day. It's too time consuming. I can't spend 2-3 hours on each article to produce great content when I don't see an upwards trend in the rewards I get.. It just doesn't work for me. That's why I'll start to create less posts. And when I think about it, I actually had greater success back when I only did a maximum of 1 post per day.