Reading the character bios, it seems that this subject may only pertain to one character. The 25 year old teacher. Perhaps I'm mistaken, but if that's the case, and it is portrayed in a negative light, I wonder how this game differs from some other games in the industry. In Persona 5 for example, you are very early on in the game introduced to a character that targets younger school girls. But he is portrayed in a negative light, as a criminal.
Some of the scenes in the VN's trailer also give off a kind of creepy vibe with how some of the characters positioned themselves.
I can see why they had to take action on the VN, but they could have given a better reason.