GDrive woes - Wait while we queue up

It has been a fair while since I worked with HTML forms and given my lost focus, I'm probably missing something quite obvious here. So, that's that.

Was uploading some images to Google drive with a bulk drag a while back and the serial upload did get my goat for one reason - waiting on to delete local copies. Of course, the what does it break argument will hold water but skipping on something that's seeming a possibility, doesn't add up.