you failed to grasp the point, it is about time management.
Obviously not the guy you reponded to, but why are you so heavily invested in how a stranger spends his time in regards to pre-production of a video game?
You'd have a point if he strung people along for 2 years, but
for all intents and purposes the game came out not that long ago and all the preparation, whether it was 2 weeks, 2 years or 2 decades makes absolutely 0 difference to you in particular.
>but he could have done so much more!
He also could have done nothing at all, if he's the type to prepare to a silly degree before going into the action what's it to you? You're not dealing with a badly programmed worker unit in an RTS here.
Let's say everything in the game is the same except all the assets are just gathered on a lazy weekend and thrown in there. You'd complain about all of the same things and say the world looks like shit, but there still wouldn't be more content unless your entire reason for complaining is that you don't live in a parallel universe where this game already has 2 years of content added, which would be entirely dependent on the personal situation (edit: I mean, what if the guy had a good reason why he didn't want to have naked chicks with huge dicks on his monitor in the last 2 years? Maybe he stuck to modelling the house because he was a basement dwelling dweeb and lived with his mother or maybe he just lacked the skills and wanted to work on them until he was happy, maybe he's just a literal autist and couldn't put down the housework (heh) until he was done once he started, maybe he had no real reason at all and just liked doing it more this way, what's it to you and why do you feel like you have a legitimate grievance?), motivation and work ethic of the developer and thus necessitate that you'd be dealing with a different person anyway.
It's such a meaningless thing to get angry about at strangers. If he doesn't deliver any content now that active development's a thing or if it's slow as shit you can complain, otherwise you really don't have any justification to feel wronged in any way and it all boils down to "I don't like the way you handled your pet project."