Robbing the culture of a clear view of what is science and what is not, so one can stay in their denial about spiritual reality, using their phoney view of science as their hidey hole, is despicable.
I agree, it is despicable, but I don't think you've established that anyone is doing this.
I think of the many lost souls who, if they only knew they could, would take the power of science and the scientific method into the hearts of their lives and families, would experiment on their kitchen tables with all sorts of interesting and important personal problems, and would find useful answers
I think the scientific method you are describing is done by many souls at their kitchen table. They throw out ideas, and then they compare them to their personal experiences and stories they've heard, and they draw conclusions.
Perhaps you would add to what's already happening at most kitchen tables--at least the ones where people talk to each other--the designing of experiments to test their ideas. You do talk about that and seem open to it, but people are people. Without the rigorous peer review process that journals provide, and without training on what's valid evidence and what is just subjective interpretation, people are going to draw conclusions, all right, but they're not going to be consistent or agree with each other. Baptists will draw Baptist conclusions, Hindus will draw Hindu conclusions, Buddhists will draw Buddhist conclusions, and New Agers will draw New Age conclusions, each according to their own biases, preferences, and leanings.
I've seen others suggest experiments to you, and you seemed to delight in trying those experiments. Good for you, but I think the average person sitting around his kitchen table trying to find solutions to personal problems is not going to change very much based on what you are describing, especially if your premise that demons exist and are trying to deceive people is true.
Mormons design prayer experiments all the time, and most of the time they get the "burning in their heart" that they pray for, and they are convinced--seemingly by following the very methodology you are suggesting--that Mormonism is true and that Jehovah has a wife and sired many spirit children who have come to earth and been born--as us. Many others have designed prayer experiments, gotten no answers, and concluded that God isn't real.
You can suggest alternative interpretations of their experiments (demons produced the burning in the heart of Mormons; the new atheists didn't pray rightly; etc.), but at their kitchen table you won't be there to tell them your correct interpretation, so they will become atheists and Mormons and Buddhists and everything else we already see in this world.
One man whose writings I read as a teenager practiced astral projection repeatedly. He definitely believed in demons, and he believed they mocked him and laughed at the hopelessness of his life. In all his spiritual encounters and explorations, he explained, he had never seen an indication of any great and good God, so he didn't believe in one.
My point is simply this. Applying the methodology you have been describing at the kitchen table of lost souls will result in what it already has resulted in. Nothing will be different.