Judge Juan Merchan, who presided over former President Donald Trump’s criminal conviction on 34 counts of falsifying business records, caused a stir on Friday when he that the New York Court System has become aware of a response to a Facebook post from someone named “Michael Anderson” purporting to be a cousin of a juror, saying that Trump was going to be convicted. Some legal experts sounded the alarm, warning it could give ammunition for Trump’s legal team to throw the conviction out — but other commentators said to hit the brakes, because there’s a lot we don’t know yet. “If this person is …