FTP can use certificates too
FTPS is not insecure if used with a proper dedicated FTP client, especially something like Flashfxp where you can set the lowest HMAC handshakes and algorithms you will accept for the connection.
It's default state maybe less secure but for it's small share of browsing, I can see why the Chrome developers do not want to spend time adding better support to the browser.
The FXP function of FTP will always have a special place in my heart though!