Why are they the greatest frames ever made?

Something about them is so perfect. I don't think there is anywhere forward from the 100/135 utli-cross zenith mankind reached with the year 2000 release of the cross-check

it is the perfect bike for every imaginable purpose and amazingly everything since then has been a marketing gimmick dumped on top of the cross-check's already balanced and fully realized vision

gravel... cross check
touring... cross check
adventure... cross check
commuter.... cross check
s24O.... scross check
grocery getter.... cross check
road racer.... cross check
fixed gear.... cross check
single speed... cross check
dingle speed... cross check
IGH... cross check
urban whip.... cross check
disc brakes?... cross check with V brakes
aluminum and carbon cross check? fuck off... cross check
hipster Elephant NFE.... fuck off, cross check
Soma wolverine... cross check with self snapping stays
trek checkpoint (plastic cross check)
salsa vaya.... cross check
kona jake ... cross check
double cross... cross check