You did not put the link of his comment so we do not know the whole context, but he is so ignorant to say that, Bitcoin is not hard to understand I don't know what part is hard to understand if he do not understand how Bitcoin works, it's on him not on us, everything you need to know about Bitcoin are within your rewach.
I think you are looking for this article -
https://cointelegraph.com/news/crypto-will-be-useful-but-bitcoin-is-hard-to-understand-says-softbank-ceo
They don't understand it because they are lazy to know it. If there's a will, there's a way, right? Or they have too much on their plate that they don't have the time to understand it meticulously.