Did the saying known as “Occam’s razor” arise, or has it been perpetuated in human culture, as a consequence of mind control manipulation to keep people from thinking very deeply about the improbable as an explanation behind the problems of the world and thus promote simplistic thinking and complacency?

This is very much the case. The saying reflects a frequent occurrence that many times the answer to a problem is its simplest solution, and true in science as well that many theories that prove to be true are the simplest, and the complex representing leaps of imagination in order to draw together misunderstood and often inadequately proven data, and the end result is an artificial construct of some kind that fits the information at hand but is very convoluted and the complexity is masking a deeper truth that can be reconciled with a proper perspective, and this will often prove to reduce the equation to a much simpler version. That being said, there are many times when the information available is woefully inadequate, and to simply apply this principle to excuse the scientific enterprise from having to truly embrace all the observations and evidence in favor of a simplified approach that ignores them as presumed outliers, is a very slippery slope, and is a disservice to truth that happens again and again. So this indeed has become the rallying cry of the apologist seeking the adherence to the party line that there is nothing to worry about, nothing unusual going on, nothing sinister, and nothing that is yet hidden about an issue. This nicely protects the workings of the Extraterrestrial Alliance, time and time and time again, in the same fashion as the idea of conspiracy theories is a misdirection, implying one needs to dismiss what they are probing and the perspective they hold out of hand simply because it is unproven, as though all theories are conspiratorial—it is propaganda pure and simple. The same is true of Occam’s razor when it is applied prematurely. It is best used as a summation that one has reached a level of understanding by tracing information and data to a fundamental root cause and straightforward explanation that can be simply stated—that happens frequently but is not a universal truth. When this is applied in a knee-jerk fashion to find fault with a more complex proposition, it can be a misdirection as well, and cause much harm in giving reason to dismiss controversy in scientific debate, and that happens over, and over, and over again to keep the truth away.