Large companies aren't always right, but they're not always wrong either.

Snap has competent engineering execs that have built a very strong company. I would have a hard time believing that they haven't put way more thought into this than OP.

I don't think anyone is assuming they can't be wrong. I think it's more that the post said this was a bad move "with authority" when you don't have all the information unless you actually were involved with that decision.

It might be a bad move still but we don't have all the information necessary so it's strange to just assume we know better.

Completely wrong way to think about it. In fact, those companies are cases of fraud and lying, and we generally do not assume companies lie. When Google releases their quarterly earnings, we assume the numbers are correct, unless there is evidence to believe it's fraudulent.