I've expressed this many many times to him over the years. I've said something like "I want to play games to have fun. If the game isn't fun for me, then I will not play it anymore".
I believe that he understands this. However, he just wanted so much to understand Elden Ring and beat it.
Personally, Elden Ring is NOT fun to play and that's why I don't play it.
I'm just astounded that my 8-10 year old son persevered so much to beat it.