I think I disagree - when it comes to sharing large files, something like a video, or even a picture in 2005, email was nowhere near as good. And also having a place to comment on things without the stacking up of reply chrome is genuinely better.
Email was created for email, not for file sharing of massive files (even though nothing stops). Facebook is even worse than email at sharing large files, video files or even pictures (like, imgur is much better).
Commenting on things is from a list of features (to be distinguished from UX/UI) I talked about.
> when it comes to sharing large files, something like a video, or even a picture in 2005, email was nowhere near as good.
That's just a stupid limitation and not even a technical one. You could happily send GBs over email. You can also easily filter allowed attachment size by sender on the recipient side, because by the time the attachment size is told, both information was already provided.
