That's certainly true, mate. Old generations would find it difficult to adopt Bitcoin for daily use. They're not widely familiar with technological stuff, unlike millennials. Since old generations are used to paper money, they tend to trust it more than anything else. In terms of ease of use, traditional payment processors are still much easier to use than Bitcoin. But, this will change over time as developers continue to improve the user experience of Bitcoin wallets. Within a few years from now, it'll be easier to send/receive Bitcoin without any technical knowledge involved. Given that nowadays there is some technical knowledge required to perform multisig transactions, and more, Bitcoin is still "Nerd Money" to most people in the mainstream world. Nonetheless, the perception of Bitcoin as "Nerd Money" greatly depends on the person itself. Some people will find it easy to use, while others will have a hard time understanding it. Education is key here, in order to help drive Bitcoin towards mainstream adoption. Just my opinion
There is a learning curve with cryptocurrency and people of older generations may have a hard time understanding how this new thing works -- hell there are even many of them who don't have the basic model of a cellphone yet. This is the reason why I don't believe that bitcoin will be the global currency and that we can eliminate fiat money not unless a global decree will force people to use it. of course, governments will not allow that to happen. The term "nerd money" perception can be true with population who are not updated with things new and bitcoin is one of the many modern innovations that many people don't know of and don't care. But I believe that we are slowly getting into the time when bitcoin will be known as the new people's money.