Yes he did, several times, with links:

https://www.winstar.com/blog/blackjack-odds/#:~:text=The%20player%20has%20about%20a,cents%20in%20the%20long%20run.
https://www.onlinegambling.com/blackjack/odds/
https://www.mrgreen.com/blackjack/strategies/blackjack-odds
https://www.gamblingzone.com/uk/blackjack/odds/

I could post 10000 more sites that ALL tell you that chance of winning a BJ hand are 42.2%. But hey, since reading and understanding basic math is not your forte I can understand that this must be very confusing for you.
Guess you better ask someone in person to explain this to you and your "friend".