They do not, however, predate opportunistic actors begging for shares of their content on the platform, and of the platform's users happily doing so. I know; my

They do not, however, predate opportunistic actors begging for shares of their content on the platform, and of the platform's users happily doing so. I know; my dad was one of them. There's a difference of kind to mass broadcast on a platform one incidentally scrolls (and thus receives incidental exposure from) versus, say, chain emails. The latter have a lot lower impact and require way more activation energy to push onward than a one-click Share.