It still shocks me to see just how angry these commenters are on articles like this one.
Part of me understands, because I remember how when I was living paycheck to paycheck and didn't know how to budget my money, I would sometimes feel bitter when I read articles about someone who had a financial success. I would be hopeful at first that it would have some magical solution to my problems, but then I would look at any lucky break they had that I didn't have and discredit the possibility of myself accomplishing the same, or at least be too greatly discouraged to start trying, despite the fact that trying would still put me way ahead of where I was. It felt impossible to change my current expenses in a way that would be effective enough to make it worth it to me, and that's what I see in these comments like, "Wait 'til you have kids and a house!"... "Unless you want to live like a college student the rest of your life"... "You'd be homeless by 60!" Those are assumptions and excuses said by those who feel their expense levels are forced upon them and cannot imagine another way to live.
Combine that jealousy and bitterness with a lack of understanding of basic finance concepts like staying within a budget, planning ahead, compound interest and living off that interest, and that puts them in utter disbelief. And anger.
To be fair, most people are given zero education about finance, and most all of us were raised with the assumption that we would work until 65 because you'd have to. It's no wonder they think some young kid who's challenging the system is an idiot. But the anger and vindictiveness still surprises me. Even my former bad-with-money self would have found a little bit of hope and inspiration through what he's been able to achieve.