Right, no need to get iffy. And players mostly have no idea of the amount of work that goes into a video game. Some dev's do manage to make a living off of patreon and steam (like DPK of BaD fame), but mostly making video games is a labor of love, for which devs are due at least huge thanks.
But there are reasons why players might get tired of long waits between many game installments. For me, I am old enough that by the time a new installment comes out, I often don't remember much about what went before, and if the final version is 3 years away, I have no assurance that I will even live that much longer. My hunch is that I am not the only one around here like that.
So, I try to avoid incomplete games, or at least games that don't have significant development so far. 40 hours of gameplay is pretty good though.