He explained that the powers were those of the presidency, not him in particular, and that they were in the context of this emergency only.
“....He explained that the powers...” I was listening and didn’t hear it. He just repeated several times that he had authority over everyone. Later Pence did explain.
If you want to rile up a red-blooded American just declare you have dictatorial power.
We threw out a monarch in 1776 for that reason.
POTUS does in fact act properly in working with governors. It is during these WWE style press conferences the wrong words are heard.