I realize that there's thousands upon thousands of aircraft codes out there. But when we're talking about CRJ's (planes that are very common in this area of the world) they ought to know what they are. Sure if it was some Russian-made plane that was build in Russia, and made a trip over the Pacific to LAX, and it's one that hasn't been seen before, it would be understandable. But a plane as popular as an RJ? That's surprising.
I completely agree that they know it's an RJ, and regardless of the variant, it has the same (if not very similar) characteristics as other RJ's. But every aircraft code seems to follow a similar pattern.
B741, B742, B743, B744, B748
B731, B732, B733, B734, B735, B736, B737, B738, B739
A318 A319 A320 A321
CRJ1 CRJ2 CRJ7 CRJ9
As that variant increases, the newer the aircraft, or larger the aircraft. I KNOW IT'S NOT LIKE THAT FOR EVERY ONE! But if anyone knew that, I thought it'd be the controllers...