It is true that Bitcoin never pays a person quickly and does not provide financial solvency. Rather, if you want to get financial freedom, you have to invest in Bitcoin and keep it for a long time, but you will get profit. I think it is foolish to invest as you wish, if you understand the position of the market during it is definitely possible to accumulate a good wealth for the future. Also, I think it's better if you hold BTC for future and long term investment. That said, we exactly invest with the amount of money we can afford to lose, but basically we invest because we can hope for Bitcoin. And currently we are so confident in bitcoin that we will never lose money by keeping it here, but it will be our main purpose to make profit by holding only BTC.
On the contrary, Bitcoin can actually pay quickly depending on when you join the market and what will be the prevailing market condition after you join. There are people that bought Bitcoin when it dip below $18k. They were I profits within a short time because Bitcoin did not stay long there. Same thing for those that bought below $30k before the surge that took the price above $30k where it has remained till date.
You might be lucky to buy Bitcoin today and the next day, it gain over $5k. This is a confirmation that Bitcoin can pay quickly.
However, our target is not the quick profits but how to buy and hold for long to make bigger gains.