I thought the removal of shoes was a response to the Shoe Bomber plot, not 9/11? See: https://en.wikipedia.org/wiki/Richard_Reid
It wasn't related to the Shoe Bomber plot, there was planning around something larger scale. To be honest I don't feel comfortable even linking to this stuff but it's Wikipedia. https://en.wikipedia.org/wiki/Bojinka_plot
Why not? "eww this is propaganda" or "talking about terrorist makes me one?"