Awhile back I made a meme with a "resting bitch face" headshot and the text:
I am NOT "one of Hell's Minions."
I'm upper management!
i.e., "I'm an upper-level demon."
The mods marked it NSFW and I couldn't see why. Then I realized--suppose someone has that on their PC at work and someone from "Corporate" is visiting or a potential customer or supplier is touring and sees it. They might think it's an employee's opinion of THE COMPANY'S management.
We normally think "NSFW means bikinis, lingerie, profanity, etc. Basically, something you wouldn't show kids." But it's actually broader. If a COMPANY wouldn't want JUST ANYONE to see it, the mods might mark it as NSFW.