That person can fuck off, and I'll ban them the second they try and tell you your own truth!
I guess when they keep their mouths shut they aren't much of a problem and maybe more people are willing to change than I've previously thought
I'll be honest, I don't know how common people changing their opinions on this is. All I know is that when I first transitioned, I went from someone who held vague transmed views, but mostly kept them to herself, to understanding that my own experience is not magically more correct, true or valid than anyone else's.