The suggested fix will be permanent, and it will get you back on the water tomorrow (if you do the repair today).
You might get your dealer to arrange something with the warranty, or you might have the stripped FS plug replaced (it needs to be bored out and replaced entirely) by a professional, and get your dealer to pay for the repair under warranty.
Did you install your footstrap screws using a #3 Phillips Screwdriver or the new Red Handle Tiki tool?
Or did you install the screws with a drill driver/screw gun?
Did you put any soap on the threads before you installed the screws?
Certainly you can apply thru your dealer for a warranty repair, but that may take awhile.
Talk to your dealer as soon as possible to get the warranty process started.
Hope this helps,