The fact this is not coming from @ljdawson@lemmy.world themselves is another big piece of evidence of their inability to maintain a good relationship or even just a good line of communication with the community and people who pay/paid for the app/subscription.
I've defended them in the past for falling short of this sort of thing in the past, but at this point it's inexcusable.
In my opinion, I think they need to hang it up and move on from Sync. They need to stop stringing people along. Or at least bring on another developer that can help move things along faster and maintain communication and expectations with the community.