

That’s a strange read on Reddit. I’ve heard people say this before, and it’s baffling.
Reddit is, and always has been, a link aggregator first and foremost. Of course it’s reposts and screenshots of others sites. That’s kind of the point. To bring you Twitter so you don’t have to actually be on twitter.
It’s funny people think this is some sort of secret. It’s right in the name of the product: soft-serve.
That’s what soft-serve is. Basically a bastardized form of ice-cream mixed with air to make it soft and add volume. The mix is often extended with stuff like CMC, but that’s hardly unique to McDonald’s.
The formulation of the mix at McDonald’s is probably just “extended” more than you might find at other places, but the fact it’s “foam” is hardly the scandal.