Sorry, but millions of working and middle class people without any "net" have done it in history, I'm sure millions have done it in the US, and millions will continue to do the same thing in the future.
As for "whitest"? Tons of blacks have quit their jobs and safety nets and tried their luck in what was termed "the great migration", while having shit for a safety net. And tons of white, latin, jewish, etc. people have done it post WWII, all the way to today.
I know at least a few people in their 30s and 40s with harldy anything in their name, that quit a shitty (but steady) job and travelled the world on a whim, with almost nothing in their pocket (and no safety nets).
You only need to not have people depending on you (like small children). You don't need a degree, parents, generational wealth, or even money in your bank to do anything.
And it doesn't need to come to some happy rich ending where they made money in their quiting job/travelling/etc. Some just come back and eventually get another job. Some just find a partner or a new country to stay, and that's it.
First, I didn't compare anybody specific to anybody (even less so, "a dude who quit their job to court a woman and lift weights"). I answered the general question whether a jump of this kind (quiting your job, on a whim) is doable without being born into riches or having some big safety net. I answered in the abstract, that is, not about this particular person, and whether they lift weights or pluck their eyebrows or whatever. In fact, I didn't refer to the person in TFA at all in my answer. I gave some examples from the Baby Boom era, but also from people I know.
Second, note that I didn't write "in WWII", but "post WWII", that is, in the Baby Boom era. This isn't about Jews escaping from the war in Europe, but about (established, and much older) US Jews (and as mentioned, other ethnicities), changing states, looking for "self-realization", changing dreams, and so on.
Third, note that if I indeed had referred to the historical plight of blacks, as you understood it, it would be even better as an argument: if those people could do it while having few things in their name, with no tangible prospects awaiting them, in bad conditions, with no education, and so on, then a 2022 educated person, with a good work prior skills, with a little saved money, who can always try and get another job, can do it far more easily.
Did they preach about it on the internet in the form of an ostentatious, almost comical prose too?
What was in question in the thread (and what my answer about) was whether one needs to be born to riches or with some cushy safety net to do it, not the quality of the prose.
You understand that for most of the people in the great migration, "quit their jobs" is shorthand for "escaped from indentured servitude as a sharecropper on the farm where their parents were born as human property", right?
Compared to that leaving a modern job and - if things don't work - try to find another later is nothing...