I think the real question is...
You're comfortably successful, making a decent living off a meagre fan base.
Suddenly, you find people blatantly copying your idea, and also finding success with it, even though their product is crap compared to yours.
what do you do?
absolutely nothing... you just cry, because it's the internet. And if you stir shit up, it ends up looking bad on you in the end.
this literally happens to my wife, it's just a frustrating reality.