I'm not the parent commenter, and I'm not a physicist, but this might be a reference to the non-mainstream theories that are often grouped under the heading of

I'm not the parent commenter, and I'm not a physicist, but this might be a reference to the non-mainstream theories that are often grouped under the heading of "plasma cosmology". https://en.m.wikipedia.org/wiki/Plasma_cosmology https://en.m.wikipedia.org/wiki/Plasma_cosmology