I think most see it in a diffrent way, when you see completed tag you expect the hole game to be completed with an ending of some kind, putting a completed tag on a single season is just idiotic, you dont see other games with multiple seasons making a hole new game page on f95 when a season 2 comes out, no they put it in the same page as the first season, so this should be seen as abandoned since it will never be completed without story ending.
If dev planed to make multiple seasons he shouldent put completed tag on, not untill game and story is completly finished, stopping halfway is abandoning the game, cant really be anything else.