But they're not semantically rich. People who speak the code aren't doing it to more efficiently communicate, such that a long and complicated message can be expressed quickly. They are taking a short simple message, stripping away all the details, then padding it such that it becomes more verbose and vapid. This makes the real message harder to decipher for the uninitiated, it removes information even for those who understand the code, and it serves as a display for people who appreciate the flourish. There may still be some meaning left, but it's semantically emptier.

Further much of it is not even code. Examples like the microsoft letter are clearly a performative act to soften the blow of bad news. No one in the know is reading such an email to discern some hidden message; it's written to not be read.

I'm always reminded of Asimov's Lord Dorwin: "[the linguistic analyst] after two days of steady work, succeeded in eliminating meaningless statements, vague gibberish, useless qualifications—in short all the goo and dribble—he found he had nothing left. Lord Dorwin, gentlemen, in five days of discussion didn’t say one damned thing, and said it so you never noticed."

In some cases, sure, they're semantically rich, but the result here is that in some cases it doesn't matter whether they are or not, that some people can't tell. That can still be true even if corporate jargon originated and is sometimes still used for rational-ish reasons.

> Eventually they figured out that language served a different purpose inside the bond market than it did in the outside world. Bond market terminology was designed less to convey meaning than to bewilder outsiders. Overpriced bonds were not "expensive" overpriced bonds were "rich," which almost made them sound like something you should buy. The floors of subprime mortgage bonds were not called floors--or anything else that might lead the bond buyer to form any sort of concrete image in his mind--but tranches. The bottom tranche--the risky ground floor--was not called the ground floor but the mezzanine, or the mezz, which made it sound less like a dangerous investment and more like a highly prized seat in a domed stadium. A CDO composed of nothing but the riskiest, mezzanine layer of subprime mortgages was not called a subprime-backed CDO but a "structured finance CDO." "There was so much confusion about the different terms," said Charlie. "In the course of trying to figure it out, we realize that there's a reason why it doesn't quite make sense to us. It's because it doesn't quite make sense."

The Big Short by Michael Lewis, page 101.