Most claim they can code, but if they were coders they would be coding
I dislike techbros as much as you, but this isn't really a valid statement.
I can code, but I can't sell a crypto scam to millions of rubes.
If I could, why would I waste my time writing code?
Many techbros are likely "good enough" coders who have better marketing skills and used their tech knowledge to leverage into business instead.