Definitely depends on the spaces they exist in, too. I only recently learned I was wrong about how many black people there are in the US. Turns out they're just "overrepresented" in the media I consume and I've lived most of my life in very diverse neighborhoods. Similarly, trans topics overrepresent the amount of trans people in a lot of online spaces and people tend to extrapolate when they only have all the data. I can see why a terminally-online individual would feel like there's a trans epidemic.