Pretty much every non-E2EE platform is scanning every uploaded image for CSAM at least, that's a baseline ass-covering measure.

And E2EE platforms like Mega are now being censored on some platforms specifically because they're E2EE, and so the name itself must be treated as CSAM.

As people who want to talk about words like "megabytes" or "megapixels" or "megaphones" or "Megaman" or "Megan" on Facebook are finding out.