Being a responsible programmer/sys admin has always been read heavy, as long as I've been alive. Write only code is antithetical to the basis of running a trustworthy system.
The Web is a rather different beast, but the question is not "can you trust the Internet", but "can you trust a random website", and now even "can you trust a previously trustworthy website".
You of course should not trust any pictures or videos as critical evidence, they should be corroborated by other means. But this has been true for several years now.