True, and in a similar vein, we still have the floppy disk icon for "save to disk". In 20 years, most users will have never seen a floppy disk in their entire life. Still, the icon will remain.
Not really. The need to "save" is becoming less and less relevant. All changes are synced with the cloud and stored immediately. Even in some programming IDEs the need to save is a lot less common.
An optimistic outlook, to be sure. Many Dropbox, iCloud, AWS, etc. users who've been burned by their experiences might beg to differ.