14 or 15. He has really bad ADHD, even his distractions get cut off by other distractions until he is overwhelmed and then just incapable of the effort of figuring out why the DP he is trying to plug into an HDMI slot is “too small”.

That doesnt work with all kids, my nephew gives up instantly when theres a technical barrier as simple as picking the correct video cable out of a pile of cables and just accepts that its beyond his ability.