The language and behaviour is consistent with the cant generally spoken by the crypto community. It's a similar idea to /r/wsb/ and does the job of identifying insiders while keeping outsiders out.
"Did you verify that the RVSM system was talking to the FMS after completing the JIC during the RON?" - Aviation "Are you sure the packets are flowing on UDP? Can someone check the CAT6?" - Simple networking
Etc. So I wouldn't say the jargon is constructed solely to keep outsiders out.
I mean, even the specific resume example above simply translates to "Worked as a Product Manager on moderately successful project, worked as a Project Manager on random project, consulted with highly successful marketing firm and extremely successfully and profitable co-operative consulting firm on business development. Likes to trade high-risk stocks, puts money into high-risk interest bearing accounts and likes to give random unsecured loans to strangers"
I understand there's a ton of bashing of crypto, but I think that looking at a unknown sub-cultures language and assuming that they are purposely using jargon antagonistic to outsiders is rather closed minded. As someone who dipped their toe in, but still doesn't understand, they have been extremely helpful in explaining the concepts even when I argue against them.
Watchwords:= seemingly slang, but conveys only group membership