Who's talking about combat flying? There are DH-82 Tiger Moth and Miles Magister in HSFX. I think there is an interest. BTW, not all the people were sane in the time of WWII (Bücker 181 with Panzerfausts). Those times weren't sane.
True on both points. But, having static models of aircraft might be a first step towards flying models, which is a step towards having flyable models.