No, this is just a "commercial" plate, meaning a plate issued to a vehicle that is heavy enough to potentially be used commercially for transportation of goods, construction, etc. and is thus subject to yearly fees to cover the increased cost of road maintenance they incur. The numbers are random but it always goes five digits, then a letter and one more digit. I handle titles and shit all day while buying in vehicles.
As someone else pointed out, CA is super strict on vanity plates and a well-known fascist dogwhistle like this wouldn't get through. It's just randomly assigned by the state. So it's the state that is fascist. Which, you know, we already knew.
There was a twitter account a while back, I think it's on Mastodon now, that used to show all the vanity plate applications in California and on what basis they'd be denied. They were really strict, and good at finding hidden meanings people were trying to sneak by. I find it hard to believe they'd let this one through.