The economy is in my point of view the social mass network (effects) of supply and demand, ask and answer, where the willingness of trade per situation can be observed by any participant of that economical situation.
A financial system is the social (forced) concensus of how this economy should be handled and when and why to take away or add economically focused rules or objects.
Bitcoin is a monetary asset that measures the economy, with rules that are established to achieve the goal of being an independent ledger that is accountable for the truth.
These rules might make it a financial system, altough it can also be argued that those rules are comparable to the physical "rules" of gold. Those physical rules do not make gold a "financial system", so it may not be necessary for Bitcoin to be viewed as a financial system either. The result is that more participants get more options amd thus an objectively greater level of choice while it stays neutral.
To respond to "manipulation = believing", manipulation can indeed be the cause of believing and it is really difficult to say what is manipulation and what not. In some way, we are all being manipulated, or we wouldn't learn certain things.
People can indeed believe certain things, and also be proven wrong. But some things are generally, historically repeative, biologically determined rules that cause history to often rhyme. Laws of nature. Those are really useful to know in most situations involving other humans or nature itself.
The result of the stable complexity that Bitcoin brings is an objective change in the financial economical decisionmaking: more choice and freedom, more local action permitted in some way, which introduces some laws of nature that were not possible at first. This can bring new oppertunities, which is our intention.