Stu, the difference is that back in the sixties when I walked into a hobby shop to buy a P-40 and P-36 to kitbash into an accurate XP-37,,,,,,,,,there were not six month long campaigns claiming that the P-36 was the "best P-36 model ever",,,,,,,and then all the modelers that found out that that P-36 was wrong didn't get called a bunch of nasty names by other modelers and the kit manufacturer.
I now find that Hitler video funny,,,,,,,since the three other *** in the room turned out to be correct and Hitler turned out to be wrong.
And yes, building accurately shaped and detailed models is that old of a segment in this hobby,,,,,,I first read about it before I was old enough to be able to do it with my skills at that time in the sixties.
Reference books, magazines and articles, accurate decals, paints matched to standards, corrections to kits, ,,,,all of those things were around in the Sixties. And people did correct the kits that needed to be corrected,,,,,,,,,and we talked about the things like the 1/70 kits that were supposed to be 1/72, or the single seat 1/72 Skyraider that came out with the Two-seater's width.