Anyone who is conscientious and capable can navigate the traditional banking system too. In fact, that's pretty much what "capable" means.
> in traditional banking you start at the very bottom of the scale and you pretty much stay there
You don't have to any more than you have to with bitcoin. You can even start your own bank, and then you can keep your deposits there and you will have a 100% guarantee that your bank will not screw you. It's not easy, but neither is writing your own bitcoin client from scratch.
A very plausible route to that kind of security is joining the board of a credit union.
> As much as they learn about the meanders of the traditional banking system, it still won't make them more in control of their assets
That's not true. The more you learn about how the system works the more in control you can become. It is exactly the same in both cases. The only real difference is:
> almost constant expanding supply
That is a real difference between fiat and bitcoin (though not crypto in general). But that has nothing to do with control, and it has nothing to do with crypto, it has to do with policy. It's easy to make an inflating crypto currency. You could even fork an inflating bitcoin. You could likewise make a non-inflating fiat currency, e.g. the U.S. dollar during the Great Depression. But there is a reason this isn't done very much -- it's because a return to the Great Depression is not generally considered something to aspire to.