If I understand it right, by F95 standards the game is "Abandoned". To be marked as abandoned 1 of 3 things must happen.
1) the Dev says they are abandoning the project.
2) a certain amount of time of the Dev being complete radio silent must pass. I think it's 6 months.
3) a certain amount of time must pass of no meaningful updates. I think that is about 18 months.
It has been over 18 months since the last meaningful update, so it gets the mark. That said the Devs are still working on the game (though at a very slow pace). I've seen people mention of 0.7 having a predicted release date of end of Nov (assuming no delays) but I don't know if that's a confirmed fact. If you visit their Patreon and go to their "About" page you can see a progress chart.