From my perspective that’s good news, there are already significant numbers of deployments and huge numbers of users who have become acquainted with the current convention. As I said above there may be better options, but it’s almost too late in the day to bother with an incremental gain which has any potential to cause more fallout than benefit.
There are people who never seen nor used floppy disks yet click that icon every day to save their data. Most computers don’t include optical drives as standard now, let alone 3.5", but it’s still very much the norm. I use certain tablet apps which bear the trusty floppy disk icon, despite the two technologies never having intersected.
If the perfect icon which requires zero explanation appears that’s a different matter entirely, but let’s worry about perfect tomorrow, for now good enough is good enough.