Before I get into this I've been in a lot of geek fandoms for a while. I'm not going to say how old I am, but let's just say I'm starting to get gray hair, anyway as someone that's been a weab for 19 years, been a part of several geeky fandoms for decades, like been a trekkie for 23 years, been a furry for 25 years and etc I know a fair bit about how fandoms grow.
Before the widespread adoption of the internet the way geek fandoms came about and grew was that mass media would create a franchise which then people would latch onto and enjoy; a modern example of this is fandoms like my little pony, steven universe or such in which a fandom grew around a franchise. With the widespread adoption of the internet the exact opposite is happening simultaneously; franchises like monster musume grew out of a fandom about monster girls.
Generally with fandoms and mass media it's extremely obvious whenever something is becoming popular.
You know how? The best way to tell is by cringey deviantart journals by people complaining about thinks they don't like.
I'm being half facetious here, but what I mean by this is that often times the larger the backlash against something that genuinely doesn't deserve backlash you can tell how popular something is. Simply put: to illustrate what I mean the gta controversy by jack thompson was the point at which you could tell that video games as a whole were becoming a part of every day life.
"What does people being salty have to do with anime or visual novels?"
The exact same thing happening with visual novels and people wanting to ban sales on Japanese games, I shit you not that people are trying this, is the exact same thing that happened in early 2000's when anime became mainstream with how people tried to ban anime.
Incredibly short version:
2000's, "ban gta!" → gta becomes popular
2000's, "ban anime to stop it's popularity" → anime becomes popular
2017, "ban anime games to stop it's popularity" → pretty obvious where this is going