The reason was anger, anger about high fees and impossible rules by banks in the far east.
Bitcoin itself with its fees, is close to copy the banks behavior back from those times.
Know body knows what satoshi nakamotor had in mind to create its currency called bitcoin, but today its creation and innovation has been a beneficiary to many people, so I believe that in time coming another person will have another insight to create its currency and worldwide will also be a beneficiary as worldwide is a beneficiary of invention of satoshi nakamotor.
We don't even know what or who Satoshi is so in this case we are just speculating about the purpose of creating bitcoin even with wild conspiracy-like thoughts like the OP said.
But in this case as long as it can be useful then why do we think about the original purpose because I think as long as it is beneficial for us then it would be better if we can make the best use of it.
I don't have thoughts too far because it's beyond my capacity, the most important thing is that I benefit from the creation of bitcoin, that's enough for me. Even though it seems selfish and ignorant of plans that could be a mistake but we cannot be naive, we currently live where we are on the path of the law of the jungle and with a difficult economic situation like this, everything that can be profitable must be utilized so that we can survive with increasingly difficult circumstances and for me personally bitcoin has so far been the answer for me, although it may not be considered I am rich with bitcoin but the impact that occurs when I am in bitcoin is at least very large to date.