Yup, true to some extent.
The traits aren't ones that I've pulled out of nowhere - they're quite clearly listed in the new testament. Of course as you say, we're back to interpretation - personally I believe that the places they are mentioned (galations 5:22, colossians 3:12, timothy 6:11 and probably more) are fairly clear but of course YMMV
I'd also not be so certain about taring the whole of the US evangelical church with the same brush either - yes the ones that make the most noise may not fit in with those traits, but I think there are plenty of evangelicals who do display those traits. But by the very nature of the traits, you don't always hear about them. Ditto history - the crusades are not representative of the majority of Christians by a long way, yet if the majority are gentle, patient, humble then why would history even bother to write it down?