"This bickering is pointless."
NYC is a special case. It is extremely high density urban living with a heavy dependency on public transportation, so space for physical separation, and heavily dependent on public dining or frequent grocery shopping.
It will skew numbers. As people flee New York, they will spread it.
You can presume with reasonable odds anyone who has been in the NYC area in the last week is at relatively high risk of being infected and really needs to quarantine.
Insofar as testing, it is a lagging indicator. It will be chasing the spread of this thing.
The effects of widespread social distancing and lockdowns as public policy in urban areas has lagged the spread of the disease some, and the testing has lagged the implementation of this distancing and the lockdowns. We would not yet be seeing and testing most of the effects of these changes.