During Kinus Torah (over Zoom) Rabbi Braun of the Crown Heights Beis Din addressed the issue. He mentioned various arguments made, and said that the Beis Din unanimously decided to forbid all minyanim, indoors and outdoors, without mentioning any reasoning, so that no one could say that the reasoning isn't relevant to him. He did mention several arguments that can be made against making minyanim, but the bottom line is that (sofek) pikuach nefesh trumps everything and is a sufficient reason.
However, he did say that name calling is wrong. He ended by saying that if someone believes that he can make a minyan in a totally safe manner he should know that it is עליו ועל צווארו.