You can only teach crypto to someone who finds interest in it, not someone who doesn't. Because trying to convince someone who doesn't have an interest in it, will lead to a problem when they don't see the anticipated profits they were told about crypto investment.
It is preferable and wise not to bother yourself by letting people know the reason why they should invest in crypto. Those who try to convince people they know are later blamed for it, for letting their friends invest in crypto