Not necessarily.
The media would love nothing better than to paint us as Jew haters, Black haters, and Hispanic haters.
If this guy was Hispanic, he may have been saying U. S. A.
Some folks do use a J sound when saying you, or “U”.
He may be telling the truth. If this were a Leftist plant, he would fess up and say he was just a normal Trump supporter.
This guy is probably ok.
He thinks USA sounds boring, so he said JewSA to sound cool and multicultural. EFF him.