I think this statement is attempting to say that Donald Trump was formally charged with committing insurrection, and that the judge officially convicted Trump of the crime of committing insurrection. I don't think either of these statements are accurate. I'm not sure what the "factual finding" is worth.
You’re reading way too much into the quote. Courts make factual findings all the times in cases, civil, criminal, etc. all it means is that the judge finds this fact to be true; no criminal aspect is to be inferred.
That said, I think the commentator can stop goi g all Toobin on this. I’ll betcha the appellate courts find a way to review that issue de novo, even if they get past the hurdle that I’m concerned about whether there’s substantial evidence to support that factual finding