I've been through the exact same thing even with close family members and indeed it's very disheartening as you said. But at the end of the day it's your life and your dreams. Those who are criticizing you are either outright haters or maybe they even have good intentions but they clearly are not keeping up with the times. If I were you I'd just explain 9-5 is just as much of a pyramid scheme as crypto or anything they consider a "scam". There's a hierarchy and bosses, managers, and then regular employees under their power, who are doing nothing but making their superiors rich, rather than themselves. How that is any different than a pyramid scheme is beyond me.