Isn’t this just evidence of the Overton Window? The amount of promotion needed to push any particular cause is significantly lower than people intuit. And following on from this, once that cause has hit the mainstream, the amount of coverage it gets leads to people further overestimating its true significance. After that point it just snowballs
I think what we’ve discovered is that, thanks to the Internet, that’s a strategy that’s significantly easier to employ than ever before. In the past ups at least need to have mainstream media outlets onboard. Nowadays you can do that with a hashtag
Currently, for example, there is Wokeism in general, with particular emphasis on transgenderism. Transgenderism only "affects" a very small percentage of the population, nobody paid it any mind a decade ago, and yet today it's a thing.