Any asset that has a value can be a generational wealth. People that owns gold will have it inherited by their children and children of their children someday because it retains value and it's a common store of value. And so as Bitcoin, this is a very known store of value nowadays and that's why it doesn't make any difference if someone is going to treat it as an asset to pass into generations for it to become a generational wealth. I think an average period of years for it to be considered as generation is around 20 years. With that period of time, that can be classify still as something in the line even though we don't know what awaits in the future.
No, so far bitcoin is considered only the most volatile investment and not the best store of value. Even though bitcoin has been around for over 16 years and grown millions of times, that is still not enough to guarantee that the price of bitcoin will continue to increase or that it will continue to exist in 10 years, or 20 years.
Given a market capitalization of 1 trillion, existing for 16 years and never having faced any major challenges such as world war, or world economic recession...we cannot affirm that the future of bitcoin is almost certain or guaranteed.
If I had to choose assets to pass on to the next generation, I would still choose gold and real estate over bitcoin. So far, Bitcoin is only suitable for investment because of its volatility, it cannot be considered a store of value or a safe haven.