I'm not gonna lie, the whole reason I got interested in the game in the first place was the NSFW approach. The premise offered something new and original in the market of +18 games. Seeing that part go would heavily drop my interest, and I'm guessing some others as well.
When buying something, the consumer asks himself: where would I get the best experience for my particular interest with this amount of money? Games follow the same logic, as does porn. It sells, and the proof is all the unrest that stems from all this BS censorship happening lately.
Now, what kind of experience offers the game in a SFW environment? Dating sim/management you say. The former genre already oversaturated, and the latter not exactly popular. Adding the +18 content wouldn't make things much different usually, but the premise of the game being "monster creatures" adds a little spice that makes the whole combo of genres unique in itself. Remove one of the parts, and the rest will struggle to hold on, I think.
So what I'm trying to say is, if you envision this project from a selling standpoint, I believe you're considering the wrong approach. And if you wanted to make a game because you're passionate about it and the ideas that drove you to do it, then you shouldn't sacrifice any of those ideas.
My suggestion would be to keep the game as is, then offering a free "Demo" (like up to a certain update patch, or a certain story point, maybe have it be just a full loop of the first monster) on Itch, like a lot of other creators are doing. And using that to promote your Patreon where you would sell the full updated version with everything included.
Win win for all.