When they assemble it, they never think about the DIY'er
tunnie, you're completely missing the point. It has nothing to do with DIY. It should (dangerous assumption with any german marque, I know) be designed so it can be readily serviced, even their own dealers need to lift it on standard lifts. So it will have lifting points, which are unlikely to be the jacking points mentioned in the glovebox manual. Mr VW Dealer plonker isn't going to lift it up on the jack in the boot...
Think
you are missing the point
Yes, it has lift points. But there are only
1 set, the set defined in the manual are the ones a garage uses with it's lift. Which is fine for that lift once every 2 years, but not at home on a fairly regular basis. See here...
That thin sill strip, is the only jacking point... which you do right at the end.
Hence looking for either a home made pad to 'soften' the impact to said rail, or these other bung replacements which offer another lift point