You should leave more room for the possiblity that the author may not know how to answer that question. They know they’re alive, of course, but they may be totally unsure of whether their long weeks or months with no update should be interpreted as a cancellation or a hiatus–whether they’ll be able to come back to finish the game, or dismantle it and use bits of it elsewhere, or just never come back at all.
I get that you’d like them to pop up and give you…something. But it’s harder than you may think for an author to make a post that says nothing other than: “I’m alive but don’t know what to tell you about the WIP. Maybe I’ll come back to it, maybe not.” Is something like that really worth posting? Especially if their fans have already expressed disgruntlement or been talking as if they’re entitled to a finished WIP?
But they may well still be hoping it’s a slowdown instead of a stall, and that they’re chauffeuring you very slowly rather than abandoning you mid-junction. 