Well, these days most of the time when people hear "visual novel" they expect a kind of game... but you're definitely right, nothing says it should be. They should coin a new term for when they expect that. Anyways, thanks, and you deserve it
Yeah, for some reason they do. I guess the definitions aren't as clear cut anyway. Not that it really matters too much. There will always be hybrids and stuff that will blur the lines. The important thing at the end of the day is that the player has a good time.