I noticed in that first thread you linked to (the preliminary report) that someone asked how Meguiars labeled #9 and #9 2.0 as non-abrasive. I have asked Meguiars about that before and what they said is those products contain micro-abrasives. Apparently there is some limit or size that is considered an abrasive, and these don't make the cut. This is why it can be a swirl-remover that obviously has some abrasion yet they call it non-abrasive. If you want to know if something has micro-abrasives, it's best to ask. It might seem weird to have some "abrasive" limit or definition, but if you think about it, everything is somewhat abrasive. Even water has some abrasive property. Run it down your hood for 100 years and it will have an effect. So apparently #9 isn't abrasive enough to be considered an abrasive.