
I still can not find why it’s important to know about blockchain technology if you just buy bitcoin and nothing else
It's important because without understanding the potential utility of blockchain technology, you are just relying on what other people say about Bitcoin. Take the technical side away and what's left is hype, very similar to that of all Ponzi schemes.
That's why we need more of what @Jawhead999 suggested above
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I'm suggesting to talk about Bitcoin works for dummies (which is not a tech savvy person) ~
Most people are not tech savvy, but they need to know the difference between Bitcoin and a Ponzi scheme for their own good.