It's easy to dump on jargon.

Jargon makes it nearly impossible for a non-expert to understand a conversation between experts.

But jargon isn't primarily an obfuscatory phenomenon.

Jargon is a form of compression within a community of experts.

It makes it easier for the experts to talk to each other about nuanced/large concepts in that area of expertise using shorter labels.

It makes it much easier for the experts to talk, but at the cost of making it harder for outsiders to understand.

Just because the experts find the information useful to compress doesn't mean that it's useful for society, of course.

Any kind of closed system tends to become an echo chamber and then increasingly become more kayfabe than ground truth.

But still, the experts are implicitly voting that the jargon is worth having, so it might be load-bearing.