Is your point that it doesn't matter if those "pictures of an internal slack channel" actually contain trade secrets of if they show some people posting blue hearts to cheer up their coworkers? IANAL but I think it does matter what those pictures contain.
I was responding to the parent's statement that "restrictions on confidential information only apply to government classification of information. Private classification isn’t a 'real' thing, it’s just a breach of a private contract."
This is not the case - you can be convicted of a felony and go to jail for taking a private company's confidential information. Nowhere did I call layoffs a trade secret.