Not wanting to discredit ANY marque, in spite of the fact a number of marque have been hyped/over-hyped over the years.
Colnago, as per their standard geometry have always been excellent. NOT a bike for everyone. Per its geometry, it is not a bike as "relaxed" as a number of other brand. "Relaxed" IS good! They're not nervous, just not "relaxed". But, in the right hands - assuming properly built, beginning and ending with SOLID wheels, thank you, Colnago has always been excellent.
Go back four, five plus decades to the easier times when EV and climate change was not being rammed down society's gullet, when pre-assembled "bikes" with en suite "gruppo" were not 100% from China....., and making one's name in the frame marque business was not easy. Nor cheap. Colnago (Ernesto) turned out excellent design and promo'd heavily. He won. DeRosa won. Bianchi won, etc......... Who amongst you know of Dei, Picchio, Galmozzi, Messina, Fiorelli, just to mention but a handful of superior builders/brands that never made the cut? Reflect upon what few - less than a handful today still exist, blessedly dedicated in turning out a superior lugged steel frame....... And for well into two plus decades, Campagnolo (a privately owned/family company) make the overwhelming majority of their revenue via the aviation and aerospace industry where they are, no surprise, unrivaled. Whenever you fly commercial, Campagnolo ARE getting you there.......
Colnago knows what works beyond the standard - required - proven trigonometry rules in terms of marketing. Therein lies the brand's "mystique".