The "Riv-Nuts" you pictured will be an excellent, permanent fix. They are installed with a tool resembling a pop riveter and they're available in a pretty good selection of diameters and thread pitches. You will need to drill out the old screw anchors, however. Go for it!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!