Oh yeah. I bet NYC throws together morgues every other day
https://thehill.com/homenews/news/490847-new-york-city-sets-up-45-new-mobile-morgues
2. Cuomo and DeBlasio have both been exposed as grandstanding, Trump-hating attention whores, who would do and say anything if they thought it would score political points or even better, score federal cheese.
3. The second tier has yet to be enacted, but would send bodies to the potter's field on Hart Island in the Bronx, where inmates would bury the deceased at the jail on Rikers Island.
So, theres a plan to have prisoners dig holes... And they ordered temporary morgues to be set up. Neither of these proves anything, other than that Cuomo and DeBlasio are either as panicked as all of the other pearl-clutchers, or (far more likely) just trying to keep the panic rolling for their own political purposes.
Your evidence is about as substantial as I expected it to be.