"a lot of people who pirate before bying", is a truth with modifications. Piracy these days is not what it used to be in the glory days of the likes of piratebay. But still if you look at sites such as svscomics and the download count on typical patreon games you also find on this site. That there is people who will support and back something after trying, sure, but majority will just keep download for free, that is the nature of piracy.
When I was younger and economy wasn't all that, I pirated more because I had less spare funds to use on what I wanted. As I grew older and ended up with more spending money, I stopped pirate just about anything I could get my hands on as well. As for these adult games, sure, I download and pirate just as anyone else for most parts but I try to support games I find worth the while too. Some games I never supported, but ended up buy when they did appear on steam.
But to get back on track. You don't really see the shit show about the game on the steam forums as you done in this thread. And in general it seems like the feedback from people in this thread who bought the game seems far more positive than those who didn't.