I moved out of Northern NJ almost 15 years ago, but because I'm lazy, I still send my personal tax data to a CPA there to do our routine returns. This was mid March.
He usually finishes them within a few days of receipt but this year he told me we would use the Covid extension. When I asked why, he said the office was focusing all their efforts to work on PPP Loans for their clients! I never would have expected that & I haven't seen this reason posted here?
Regarding "logistics", think about this craziness: My younger son is living & working in Northern NJ. He does HVAC/plumbing work which NJ deemed "necessary". He bought a used truck in March that he still can't register/drive because NJ DMV is CLOSED! Imagine if he didn't have another vehicle. You can "renew" online, but can't register/get tags. They are reopening the DMV on June 29th.
The rules & situation in NJ is very similar to NY so I think this is relevant.