It's usually hard to persuade the older generation to invest it cryptocurrency and that is because most of them are not tech savvy and it is not good to invest your money in something you don't know. Try to enlighten them about the technology and how it is the future before you advise them to invest.
Many people have the same approaches but as far as know, it only has a slight influence. Perhaps they are too old so as they do not want to spend their time to learn something new. I guess we have to do it on our own