Exactly this.
The "psycho lesbian" trope is frustrating to see, especially today, but it doesn't mean that the character will be a bad character.
Here, we've got a big hypocrite who project on the main character and is to much of a coward to at least try to know the object of her "affection" better...
Also doing false accusation on other people is always a big NO, man, woman, children, I don't care, don't blame people for shit they didn't do...
The highlight of this chapter is Rihito being able to call her out on that. With him being more of a "Let's just stay silent until they leave me alone" kind of guy, it's nice to see him being vocal about people having the wrong impression about his relationship with Noa.