People say you can't achieve FIRE because they've never earned 1 billion won

Yesterday, regarding the story of a family of four planning to achieve FIRE with a 600 million won apartment and 1 billion won in financial assets,
there were many comments saying, "How can you achieve FIRE with that amount? It's definitely not enough."
I believe most of the people leaving those comments are either people who have never earned 1 billion won or people who invested in real estate.
While everyone's starting seed money for investing may differ, I feel like the experience of reaching 1 billion won in the stock market is being greatly undervalued.
Of course, there are exceptional cases of people who hit 1 billion won in a short period by using leverage and catching a market trend,
but for those who stayed in the market for a long period without being knocked out and reached 1 billion won, the value should be placed more on the experience rather than just the absolute amount of 1 billion won.
The problem seems to be that people evaluate it as if the upside is capped, similar to real estate investment. (Well, of course, these days, thanks to the Democratic Party, stocks are rising better than most things;;)
It is not easy to see people around you earning 1 billion won through stock investing.
Of course, even if they earn it, they might not talk about it,
but since this forum is an online space, everyone talks about their 1 billion won.