Have you heard of the word "unfalsifiable"? I guess not.
It is something that neither can be scientifically proven right or wrong. For example, there is no scientific evidence of ghosts existing. Likewise there is no scientific evidence of ghosts not existing.
Now, there are people who think just because there is no scientific proof, ghosts don't exist. (Most people come under this category.)
And then there are people who are like there is no evidence of ghosts not existing, thus they exist. Your argument tend to align with the second kind.
I'm neither of them. I have issues with those who are selling ghosts and claiming to know exactly how it works. When, in reality, it is nothing but load of BS.