Earlier quoted context omitted.
Chrome still displays bitmap images. (S)FTP is still used, there's a lot of legacy stuff on the internet, and Google does not dictate what technology people use. It's still a web browser after all, not an Instagram viewer. > It's not part of the modern web, so it's just another loose end to tie up. While I see that it is shared by many here, I do not get this sentiment. It's still out there and rarely used, yes. But…
Are you sure it wouldn't require much maintenance? "We have to support this other weird crap that nobody uses anymore" is like pain point #1 for nontrivial surgery.
The linked Google Doc says that usage in a 28-day window was at 0.01-0.03% of users (not sure which figure to use there). Sure, that sounds horrid at first but think about how many users Chrome has, that's not nothing either. Instead of implementing encrypted connections to make their software better, they jump to deprecate yet another protocol. I just find this really hard to grok. How many people used the profiling features of the developer tools in that time frame for example? Not many? That's cool, do we get to keep those anyway?
Browsers are complex, yes, it just would be nice if we could expect a bit more of a graceful deprecation process with better communication. If you don't feel like supporting it, move it to an extension/plugin to separate it and put it somewhere the community can pick it up easily.