1. Yes lets not forget them. Can you name some of them and what they did that are generally totally unknown for the rest of the world?
2. Crazy guy? I cannot see anything crazy with him. You have of course your meaning about him, but it isnt neccesarily more correct than others meanings...
He works with engineering for a living and also leads and guides groups of motorbikes in Vietnam for a living. (You would have known if you had seen the whole video...) Yes he also sells some merchs and also probably get some pennies from his YT videos, but hardly anything to live of.
3. He is young. And so what? Do one have to be old to be an adventurer?
4. Agreed! But so what? We cannot discuss someone that are unknown and wants to be so. Bless them btw.
5. True. But so what?

My point is if you spend 30 k € on a bike and 5 k € on equipement - you doesnt neccesarily get more fun than if you spend 5 or 10 % of that on bike and equipement. On the contrary - the bike is small it can be taken anywhere compared to 250 kilo socalled advbike. Bike cost and daily running and maintainance are peanuts compared to a huge advbike - so you can travel for many years just for that difference. And thus you dont have to go back to work within a year. You dont have to constantly worry about theft, service, how to get spare parts, insurance covering this or that etc etc.

PS - dont be too serious, have fun and travel light...

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In the end everything will be fine. If its not fine its not the end....