I'm impressed by RFKjr to speak the middle ground on many topics, one that to his party looks radical. He has a very astute way to convey his thoughts, but if you look deeply into what he says it leaves much to be desired. This may be caused not by his disagreeing with us, but he acts as a mirror to our own views.
Many bitcoiners feel like we want bitcoin to be traded without capital gains taxes. But if we got what we wanted, and that's exactly what RFKjr is proposing, we immediately see the next obstacle: Income tax. Regardless if capital gains tax were removed from bitcoin transactions, we still need to account for the difference between what dollar amount bitcoin was acquired for and what dollar amount bitcoin was sold/traded for. This is still income, and still requires us to maintain onerous transaction logs so it is taxed according to the law. If bitcoin trade profits and losses were exempted from income tax altogether, this essentially violates the legal tender law and several tax laws.
RFKjr needs to do a much better job of explaining what he means by exempting from capital gains and explain what that looks like in a practical sense. Does that mean that one can pour one's savings into bitcoin and when the dollar price goes up, you are fully tax exempt from this gain? Can you imagine your screaming uncle about people not paying their fair share?
You have a point about RFKjr, at a minimum he is opening the Overton window for all sides.