You are welcome to write your own game and come back to this thread in two years telling us about the plethora of skills and time needed to make one that is even remotely good. Thanks.
This really isn't a valid argument in defense of Lemonkey.
While it's quite true that there's a lot that goes into making an adult game, and that it's hard work, and that some developers work faster, while others are slower, there are plenty of adult game developers who are working solo, and who are creating adult games more complex than this one, who are releasing updates on a regular or semi-regular basis. Some may release updates every month, while others release updates every three or four months, or even just twice a year. But one thing which nearly all of the good developers do is to keep their supporters informed about development.
It has been one year and seven months since the last update to this game was published. Even developers who release updates only once every six months would have released three new builds in that time. And Lemonkey doesn't really keep his supporters informed. All he does is put out a new excuse for why the update is delayed or a new version of "It's totally coming soon. Just trust me." That's not a good way for him to treat his supporters.
If you support Lemonkey, and want to go on supporting him, in spite of his failings, that's fine. It's your money. Spend it as you see fit. But you can still be honest about the state of development and the developer.