Crypto being full of grifters does not mean that the actual developers in the space are using "technobabble" in order to sound smarter without actually introducing new concepts. Crypto is actually innovating in ways that are broadly applicable to computer science in general, e.g. with all the work being done on Zero-Knowledge Proofs. And those innovations require new words because they are new concepts. I think it should be somewhat obvious to anyone that has actually looked at the space that devs are not just re-naming existing ideas.
Again, the two things are not mutually exclusive. Most people/orgs can be applying blockchain tech in ways that are not actually useful (or are actively harmful), but that doesn't mean there aren't people in that same space doing novel work that requires new terms in order to communicate with other experts/researchers/developers efficiently and effectively.
