First of all, there is a free "demo" version. So it seems more than a little pissy to just claim that the dev is only looking out for Patreons.
Second, do you go around to restaurants, and complain because they don't offer up free food, and you're too poor to afford it?
Third, the dev is asking for $10 for this game. If you set aside just $4 per month, you could buy it before July. And you can jerk off to the demo in the meantime.
It seems to me far more likely that you're too YOUNG to buy the game, not too poor to afford it.