Earlier quoted context omitted.
Not to take anything away from him, but I think his other achievements are far more impressive. Learning to fly or play the piano generally "just" takes time and money. The really hard things are those where you can apply yourself fully and still fail.
Yes His father may be a businessman (yes, I read the part where he says he's an electrical engineer), I'm not sure. Based on what things cost in Ireland today and the salary one can make, it does not look good. And any salary considered 'high' pays 41% in taxes (where high is > $41k per year)
That's incorrect. You don't pay the high rate of income tax on all of your income, but only on income over a certain threshold depending on your circumstances. Actually we have pretty low income tax rates when compared to other EU countries: