Frame sliders save my bike

That is a reasonable question.  A set of frame sliders are really designed for a crash resulting in a sliding bike. A frame slider tries to keep as much of the bike off the ground as possible as it slides to a stop and hopefully preventing it from flipping as it grinds off speed. It won't prevent damage to bar ends, muffler or other parts but it should minimize the damage. For a tip over like the OP's bike a frame slider should minimize damage other than bar ends which will almost always take a hit. Most frame sliders like Woodcraft, SW-Motech and the like are 'peg' style sliders with a delrin-type material to facilitate absorption of energy (speed) without a hard metal surface touching the ground, the Yamaha ones are aluminum and their design lets them have a lever effect allowing them to fold back. I'm not sure this is a very good design as I can imagine what they would do with an on road crash, much less how they acted in a tip over. They should not have folded back like they did which caused damage to the side panel.  For a factory designed accessory (and pretty pricey) they didn't do their job, imo.  I think the standard Woodcraft-style sliders offer good protection at a reasonable price point.  Frame, axle, engine covers won't prevent all damage but they should keep the expensive bits safe-er and hopefully prevent serious frame damage.  They are an aid, not a guarantee.