I think the end goal may be to monitize the news feed, but overall the news feed sounds like it’s so poorly designed that nobody would want to use it in the first place. Being Japan, maybe the news feed was some high ranking dickhead’s pet project and they got this “feature” pushed through without anyone actually having the guts to say it was idiotic.
Most of them would be denatured by stomach acidity but the risk of something like paradoxin finding a small route into your blood stream is too damn high.
When it comes to venom that is also used as a toxin in other species, though, and is a big killer of humans, the crown goes to https://en.m.wikipedia.org/wiki/Tetrodotoxin which is used as both a poison against predators for things like pufferfish and a venom for things like the blue ringed octopus.