His idiocy in not clamping down on violence by the George Floyd protesters was gross incompetence. No New Yorker did anything to George Floyd. DiBlasio should have encouraged New Yorkers to stay home, avoid violence, and pray for his family. As the protesters from my youth would chant: "Hi Ho! Hi Ho! DiBlasio has got to go!"
DiBlasio is safe. If Cuomo fires him, Cuomo is responsible for what comes next. Either DiBlasio blunders through it, or Trump gets fed up and invokes the Insurrection Act. Either way, Cuomo will be up in Albany, loudly complaining that the job is not being done right.