The biggest factor impacting the outcome of an experiment in psych is what the researcher conducting the study wants to be true. The whole subject is broken down in this article: https://slatestarcodex.com/2014/04/28/the-control-group-is-o...
This is a characterization that you have just made, not one that the person you are replying to made. They were very clear: "The biggest factor impacting the outcome of an experiment in psych is what the researcher conducting the study wants to be true."
Even to say something is "more pseudo than science" almost directly contradicts your characterization, because it implies that there is both science and pseudoscience.