To build our way to freedom first we have to get out from the way of ignorance. Knowledge is our most powerful weapon on this fight.
I agree knowledge is our most powerful tool to gain freedom but that is if the government allowed us to do so. With knowledge, we can find loopholes in our judiciary system but still, that doesn't mean we have full freedom because we are actually forced to take the given hole that is least regulated by the government. As long as we are living under a regime, we will never have absolute freedom. Same goes with using Bitcoin. In my country we are free to use Bitcoin because the government allowed it. But once they banned Bitcoin, I believe that freedom will completely dissolve.
I am not here to burst the bubble of those Bitcoin is freedom believers. Actually, I am one of them but I believe I am more on the reality side. And don't take things on the extreme. I believe Bitcoin only provides freedom of money transfer, nothing more nothing less. If there is so much more please feel free to tell me.
There have been different experiments, such as Blockchain voting, Blockchain for ticket verifications and similar. In many cases, it seems that moving to Blockchain is not easy and isn't worth it, which is why non-crypto blockchain projects didn't become a huge thing.
The reason behind the failure of non-cryptocurrency blockchain project is that there is no monetary gain to whoever participates in it. So aside from the independent company that uses it, it does not appeal attractive to the public.
Moreover, let's not forget that with Bitcoin, people have the freedom of storing their own coins and of participating in the market as they fee fit.
Even without Bitcoin people has freedom of how they store their money. I do not think that there is any difference in this except for technology.
With other ideas like the op's replacing politicians for deciding tax distributions, it can get tricky. If we try to make decisions somehow automatic and not controlled by anyone, we can get into a dystopia pretty fast and to a situation where humans aren't in control.
There will be no sentiment, the process may be fast and efficient but most of the decisions will be inhumane. Besides, the authority doesn't change since all the decision will come from the department that is responsible for the activity.
If the idea is that people will have an equal say in such matters, then it's worthy of exploration but it's sort of like voting, and IMO there's a difference before regular people and professionals for a good reason (most people don't understand how taxes work, which industry needs how much of them, so that nothing critical for society collapses, and the majority might even vote to have no taxes altogether without realizing the consequences).
If it comes to voting, all the poll results will be for personal gain. I believe this kind of system is doom to fail. as you stated, normal people are not knowledgable about taxes and its purpose, so I think let's just leave the decision on this matters to the experts.
Bitcoin can't fix the world, but it makes a significant contribution to showing that more financial freedom that could have previously been imagined is possible. Reimagining other areas can lead to good results, good alternatives. But maybe not with Blockchain.
Bitcon doesn't make a contribution to financial freedom but rather to the freedom of financial transactions. One's financial freedom depends on how hard and smart he works and how well he manages his financing. Because financial freedom is defined as having sufficient savings and cash on hand to let you live the life you desire.[1]
[1]
https://kwik.insure/kwik-hub/financial-literacy/financial-freedom-what-it-is-and-how-to-achieve-it