In this 18+ games niche, there will always be this kind of confusion. Always. Especially with visual novels, which are a weird mix of book, game, and hentai
There are VNs that were released years ago and still don't even have a single sex scene, just like there are ones that were released yesterday and already have five
To minimize frustrations, I understand it's the developers' role to communicate and make it clear what the pace, focus, and dynamic of the game will be, but it's also the player's responsibility to understand these matters and deal with them. If they like it, perfect! If they don't, that's fine too, no big deal!
Of course, it will always be frustrating to hear negative or clueless comments about the project I love and dedicate myself to so much, but these days I try not to care too much about it. I recommend doing the same, and if the comment is super offensive or breaks the rules, just report it and let it die