I don't know if this is a recent phenomenon or if I just haven't known where to look before, but after the stock fall I'm seeing links to remarkably unsophistic

I don't know if this is a recent phenomenon or if I just haven't known where to look before, but after the stock fall I'm seeing links to remarkably unsophisticated "investors communities" of a kind I'd only seen for cryptocurrencies before. The description of these XIV derivatives just screams "run" to me, they're pretty much guaranteed to eventually drop to 0 if you hold them long term. Maybe they have some sort of hedging purpose in n-dimensional financial chess, but there's no way they should have been part of someone's personal portfolio. And yet I've heard multiple tales of people trading them, even on margin! I'm reservedly optimistic about trading platforms like Robinhood, but maybe in the end they'll turn out to be just another way to funnel dumb money into a bubble.