you might not care, but I do, my bike(s) is my transportation and way of earning a living, parts replacement and compatibility is an issue

quit being a contrarian azz, its getting old, really it is, your 1950's schwinn probably hasnt even gone 1000 miles yet in 50+ years LOL, on top of that, your comparing a bike made back when quality and longevity meant something, the bikes in this discussion by the OP do not, and you know it