There's a lot of slang and jargon (metaphors, some good, some silly), to the point where most crypto projects are scams, hiding what's going on (many DeFi projects built on Ethereum).
And this is my opinion as someone who loves the value proposition of what cryptocurrency was supposed to be (see first line of Satoshi whitepaper), and care more about seeing the technology gain mindshare than hype cycles and price movement.
A randomly chosen crypto project (including ones that use Ethereum) will probably be mostly nonsense, but Ethereum itself is a serious project with interesting deep engineering.
What technical projects have no impenetrable to outsiders terms at first glance? Try to read information on React, Django, Tensorflow or whatever software project you like from the PoV of an outsider and tell me you won't find plenty of jargon, metaphors etc.
But those also aren't ponzi schemes offering 1000's of % APY based on convoluted multi-token staking schemes, minting, etc. that directly interact with money (as tokens) you send it, potentially breaking SEC rules because of what it means to be a money transmitter (low bar).
(Overall I'm talking about a bunch of tokens/dapps on Ethereum, not Ethereum itself, BTW.).
And this is my opinion as someone who loves the value proposition of what cryptocurrency was supposed to be (see first line of Satoshi whitepaper), and care more about seeing the technology gain mindshare than hype cycles and price movement.