The Dev has been making $461.5/month according to Patreon, without even posting a single update for over 9 months.
This game has had one (1) version come out 2 years ago, and then absolutely nothing else.
The paid supporters on patreon got a few images, and that too stopped over a year ago.
In spite of that if the dev is still getting passive income without doing anything at all, obviously they would post messages that the update is coming.
But I agree that the project is still not abandoned - the project is to make passive income without doing anything - that's still working out great for the dev.