He is kinda right, but at the same time, I don't think that Bitcoin/crypto is that complex. Maybe the elderly people would find it difficult to understand everything about blockchain technology, cryptography, mining, hashrate, wallets, etc. but the young and medium aged people have no problem with using cryptocurrency wallets. After all, young people should be the target demographic for the crypto industry, but the crypto industry shouldn't portray itself as some kind of "Eldorado", where everyone would be able to make lots of easy money. Many people view the crypto world as a place, where people are making and losing money by doing speculative trading and gambling. This makes way more people scared and suspicious about crypto.