I check back in every few months to find the same excuses - and the same defenders. To each his own.
Back to games that I can actually play...
Sometimes I feel like the members of this forum forget where they are:
If you have paid to support the development, then it is a discussion you should bring up with the developer in one of the channels they engage with their supporters through. My understanding is that the dev has been very careful about not charging people when they feel like they are not making progress on net new content. It is so entitled to come to a site where you are pirating their content for free and then complain about them not putting enough content out.
This is why the rule quoted above makes sense. This place is great for downloading games for free and for getting in depth descriptions of whether the content of that game matches your preferences.
Yes, it is nice to see how long it has been since the last update and how frequently they are coming. But since you "check back in every few months", you know exactly where the development is on this game. Why bother complaining about a dev not making enough content that you are not paying them for?
Instead maybe you should realize that the content they have provided you is high enough quality that it has made it worth checking back every few months, and be happy that the dev is putting a lot of their free time and effort into creating content that you like, with the full understanding that most people will not pay them for it?