So if Trump doesn’t SAY it, it doesn’t matter?
I think you missed the point.
If Trump had pointed out that the judge belonged to an organization that advocates for illegal aliens (a fact in evidence), is affiliated with an organization that is actively protesting Trump at rallies (also in evidence), the judge would now be on the defensive.
Better yet, Trump should have just let his lawyers file a motion for recusal, and point reporters to the filing with no comment other than "we have filed that motion".
But now, Trump is on the defensive.