Even accounting for that (ignoring that the data served over FTP and HTTP aren't always perfectly equivalent), it still leaves a lot of stuff that is only served over ftp.

Google found it a convincing enough argument to warrant re-enabling ftp support last year, in light of the pandemic: https://www.theregister.com/2020/04/15/ftp_chrome_deprecatio...

That doesn't mean I'm against deprecation completely. But you can't pretend it won't affect people