The problem come when people think this is a f2p where you can get all the stuff just playing a lot, and money only accelerates the process.

Wrong, this is a f2p where you can get "most" stuff free, and a lot of frustration, cause you miss a lot of stuff. Even more unless you spent a lot of time here there are "free" stuff out of reach, for example OI reward to only 500 players.

Here's how the game works, at the beginning you can get a lot of stuff, while the money barrier slowly approaching closer, until you crash with it, and then the free content grow so slowly meanwhile the pay content tempts you.

You must choose if you want spend money or not. If you not then you know it can be frustrating, and if you want, you must choose where. I'm a miniatures collector, like WH40k, Kingdom Death, etc. And like in any hobby, I know I can't get all of what I want.

About don't spend money on browser game, there are plenty of good H-games with amazing quality and content if you prefer spend money on not browser games.