The key word is "so far" - no one can reliably predict where will Bitcoin be in the future, and there's no guarantee that a major bear market won't come. Maybe all these recent bull runs are a bubble and there will be a huge correction - that's a real possibility too. Those "boomer investments" are yielding less profits than BTC for a good reason - they are less risky and far better understood.

If I were planning to retire off BTC gains (and I might actually do that), I would focus on exit strategy to actually take BTC profits and move them into safe and predictable assets, instead of holding all my wealth in BTC for the rest of my life.