You also have to consider where he is coming from. There is a universe of charlatans out there, that obviously make trading for a living, a rather sketchy endeavor.
Take this cookie-cutter fraudster, sociopath, who truly has NO FUCKING clue what he is doing.
A poor man's Timothy Sykes, and Sykes is also full of shit, and a fraudster too.
https://www.instagram.com/nourtrades/?hl=en
All marketing:
https://www.tradelikenour.com/course
Coffeezilla is GREAT:
These are very easy to spot, so that if you fall for them, it's really your own fault. I specialized in the "advanced fraudster"
Guys who claim 3 PhDs, and 100 Billion+ under management, offshore. Guys that blow up a $100 Million dollar fund in the middle of Africa, and promptly erase that segment of their lives. That's what I am after, and once I expose them, their lives are ruined, permanently.
But considering the bottomless, infinite universe of low-level scammers as the one depicted above, it is no wonder your relative is apprehensive about this industry...