Hmm, sounds like he's talking exclusively about wearing a wool kilt with full multi-layer formality. My wearing of kilts has so far extended only to tweed waistcoat & Argyle jacket -- probably equally warm.

I haven't noticed any of the problems he mentions. In fact, the only thing he says that fits my direct personal experience is:

For some reason, with certain women in particular, a kilt appears to be attractive, with the power to transform even the most frighteningly plain-looking men (cough) into a dish of some sort.
Ah well, each to his own.