In what context though? In technical point, yea it is very hard to understand even for me. Blockchain point, mining stuff and other technical stuff, they are really difficult to understand for normal people.

But, most of the people use Bitcoin or Crypto in general in the investment side instead. Because that is the most people usually does on Bitcoin for investment.
I kinda understand why most of the millionaires afraid of investing on Bitcoin because of the crypto's nature and they could lose partial of their money if they do that. They feel safer investing on stock instead.