have you ever thought that the dev might just be in a place where he or she or it could not log in? perhaps in the hospital? perhaps in a coma? should the dev update? YES but there are a multitude of reasons someone wouldn't post. i mentioned two.... how about the dev was in an accident and broke both arms? or the dev is severely depressed because something happened to the gaming files for this game? and speaking of depression, perhaps a major depression bout is happening, and well guess what... when depression hits hard you don't want to do ANYTHING, you keep saying you heard it from someone that heard it from the dev.... at least you keep your story straight, and that is all I will give you.If this isn't true then maybe the developer should update his patreon.
If you think it's dead, remove your funding if you haven't already and MOVE ON. and at this point the only proof you can produce is bringing the dev to post on patreon or on here directly (verified for here because anyone can create just any account). otherwise you are the boy who cried wolf. you won't even get acknowledgement if you are correct and the dev confirms this.