That very much shows signs of being burned out, yeah.
In cases like this when you feel obligated to work on a project because of your supporters it can work against you because obligation is a completely different thing from dedication.
I'm not saying he isn't dedicated to Kamesutra though being completely fair to the Patrons who support him every month, he could at least make a news post every once in a while. What are you working on in the game, are there any changes or bugfixes, what can we look forward to, etc.