I've watched a bit of him, he's pretty funny but also just to let you know some of the stuff he reacts to is actually bait/satire. Idk sorry if I sound pedantic but I believe too much outrage content can warp people's perception of things.
If you mean the title (Advice I would give my younger aro self) Invest in bitcoin.
If you mean someone new to aromanticism, I'd say: DONT LISTEN TO THE NAYSAYERS