I mean, you didn't provide any reason why you guessed no, so am I supposed to provide a reason why you're wrong?
But since I actually have an understanding of how this stuff works, I'll throw the truce flag in the interest of education.
I have a bag of turnips I want to sell. Bob wants turnips. Neither of us want to use cash, for reasons that don't matter. Bottom line is, we don't.
So Bob says, "I'll give you some BTC for the turnips. 1 BTC for your sack of turnips."
I say "Sure. Deal"
Bob hands me a piece of paper with a wallet address written on it, assuring me it contains 1 BTC.
I now own 1 BTC.
I want to buy some Apples. Sally has a sack of apples. She wants 1 BTC for her apples. I give her the piece of paper with a wallet address on it. She now owns that BTC.
Obviously, I'm glossing over a few things here, but the gist remains the same. I have made a BTC transaction (two, in fact. A round trip into and then out of the crypto ecosystem.) without ever having connected to the internet or divulged my identity. Now obviously Bob and Sally can rat me out if they know who I am, but that's not the point. That is not the failing of the system itself, and one can imagine plenty of scenarios in which Bob and Sally never have any idea who I am.
This is a scenario that is meant to convey the point that any security/privacy issues are NOT an issue with crypto. They are an issue with adjacent systems. (such as exchanges used to transfer crypto to cash, which as I've just shown isn't necessary.) So the security and privacy concerns that you and others have are not issues with crypto, they are issues with your assumption that crypto MUST fit within your tiny framework of perceived potential use cases. And there is no reason crypto must do that.