I have never complain about putting a game behind a paywall because this is a free world and you can sell a soda for 10000$.
But come on dude, you are using stuff from others and i bet you didnt pay from them.
This is a new meta and this smell like a money grabbing, specially using "niche" (no much anymore) fetish like cuckold.
One think is give a reward to the people that is supporting you and other is cut content trying to force people to support you. If you look in this website the games that had content behind a paywall always recieve bad reviews because no one likes that, I even saw one time a modder that made a mod and part of the mod was behind a paywall and people despiced that.
If you want to make a game and get people to support your project the best you could do is give to that people free content and with quality, if they like it, they will support, you don't expect that everyone wants to support you just because. Most of the more liked games here started small and humble with developers that accept critics, good or bads and they try to improve the game based in what people told them. At least thats what I think.
Talking about the game, I would try it but seeing that some content is behind a paywall I won't. Looks interesting but I prefer to see if this change in the future.