If my earlier interpretation was wrong then this is an even more disappointing use of LWN's space than I thought.
Putting the two articles together I am even more inclined to think it's supposed to be targeted at ricers. Who else could imagine that recompiling some assembly-heavy video codecs for x32 was somehow even remotely relevant? At no point in these articles does it appear that you've really grasped what the people who proposed, developed and shipped this ABI were trying to achieve. You almost touch on it in the second article, but only long enough to lurch onto the afore-mentioned tangent about the C standard library and files on disk.
A lot of the "myths" look more like strawmen. They aren't common misconceptions anywhere, some aren't even mentioned in the not-so-bright comments to the previous article.