Having all these facts is a short span of time really make me think bitcoin is going trough a new evolutionary step in his history, a #Phase5, as PlanB use to call it.
Warren Buffet didn't invest in bitcoin, but a gold mining company (by extension Gold), but I get your point and how bicoin comes in, in all of these, after the Grayscale/MicroStrategy big news and how it was affiliated with bitcoin, one thing could be certain and it's that there's going to be a gradual movement from fiat to assets that can stand inflation and ward off devaluation.
That being said, talking about assets that can ward off inflation, Gold will come to mind first, but the next asset I'll think about is bitcoin, though it's still a long way before Bitcoin can be technically a safe haven, but it's in that phase to becoming that, bitcoin is doing good things this year, and this
evolutionary step will continue and end up in bigger things.