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Pinarello has 6 disc models this year (of which only one is a racing road bike), Fausto's point was that disc doesn't necessarily mean "we need to use it" in every field, cycling is one of the few things where tradition play an important role, if it wasn't like that we would be all cycling on aero-recumbent bikes with air-con and safety airbags.
Is Gaimon still endorsed by Cannondale even if retired?
There's who takes your point about pointless bike gear even more seriously:
http://www.cyclingnews.com/news/fausto-pinarello-we-dont-think-a-high-performance-bike-needs-disc-brakes/