Looking at most are 2-3 months , the ones tha make fast one month updates are few and those updates are realy one or 2 extra scenes very small . With exception of this delayed update Icstor was on similar 3 month schedule with much more content for update.Most others game like you say take at their max 2 months between each update.
Milf City take around 3 to 6 month between each one.
So if you make some calculation, those 200~300 renders with optional animations every month for some others devs is a better option.
And i believe, people who use to play those game can't wait that long each time.
Now that's my opinion and some if not all can be against it, but i won't change my mind that required time for each update is a pledger-trap.
As most people here are not paying a dime ,sp its not like we are being riped off.