I was gonna give you a very detailed rebuttal, but then I read your last post to @Infinity Mk-II and realized that you're just not worth it.
You're logic is flawed, but you refuse to see beyond it, so there's no point in continuing this. I will reassert my belief that Meganium should (and realistically could) learn Baton Pass since nothing you have said has convinced me otherwise (on the contrary, I am now even more convinced she should.) Bitch and moan all you like, but the fact that Musharna, Mawile, Spinda and Ariados can all learn the move already disproves your argument. That's all I'm gonna say on the subject.