I do have watched the entire Robitaille presentation on Youtube that you've linked in a few instances in the past.
I think Holmlid might have started considering the idea of a "condensed matter Sun" since at least year 2014 but he's never written it explicitly (besides suggesting in other works that ultra-dense hydrogen and/or Rydberg matter - the less dense form - could be the "missing" dark matter in the Universe).
For example I think the paper I previously linked in this thread in post #13 could indirectly imply this hypothesis.