This is a valid comment. Many times, when the US makes "cycling infrastructure" (scare-quotes intended), it's just awful: painted lines on a busy, dangerous road, or at best a path immediately parallel to such a monstrosity. Little wonder people don't want to ride a bike next to a bunch of giant SUVs speeding at 75mph.
And it is true the weather in many US cities tends to be less mild than in Amsterdam, but that can be worked around with proper clothing.