It's almost assured that it will happen, except something very unusual disrupts the Bitcoin circle before then. Next year is halving, it's a price chase from there till 2025. I believe Bitcoin will do above $120k in its next all time high expected in 2025.
Well, but from these levels it would be an X4 or X5, not like changing anyone's life, and even less if you don't want to sell everything.
Stories of this style don't usually stand up to simple mathematical analysis, but the OP's could be real, as between 2019 and 2021 the price went up considerably. His uncle could have made X15 if he bought near the bottom and sold near the top. He could have even sold part of the Bitcoin making a good profit without selling 100% of what he bought.
We will see the future, as I doubt we will have X15 returns in a single cycle. From the current level it would be almost half a million in one cycle. I hope so, but I don't think so.