You do realize this isn't some asset rip and all the art and assets have to be hand drawn, right?
Also, considering this guy's trying to create a point-and-click style game in an engine designed for visual novels, it's probably a pain to test everything and make sure each release works.
Point being, this shit takes time, and given the small amount of staff this guy probably has, if any, and the fact that the story is not "duh, sex scene, duh", this isn't exactly a game that's going to be updated as quickly as others.
Also the fact that you're whining about the amount of money he gets from Patreon when, given the fact that you're on this forum that pretty much is just a hub for pirating porn games, you probably haven't given them a cent.
Quit being whiny and entitled and accept the fact that quality work takes time, life isn't a shitty cash grab mobile game. There are no gems to skip the wait.
(also if you think this game is mediocre, I'd hate to see your thoughts on the rest of the games on this site, yeesh)