And that's without getting into the actual idea of promoting the worst type of games possible. F2P is an plague.
I can only guess that the commission on all these referral links pays well enough to not bother with any ethics.
A significant chunk of the world's largest games right now are free to play.
As an example, I can play Fortnite with my friends on other platforms for free. That's impressive.
Fortnite is an exception. It pioneered the model of selling cosmetic and vanity items that have no direct effect on the gameplay. Good on them.
Similarly, New Destiny 2 is a repackaged shareware model - a demo for free with the full game for $. Again, it's a fair arrangement.
Not so with the pay-to-dominate and pay-to-accelerate games that OP's site is peddling.
So many F2P games on mobile devices are like that and its crap.