These disciplines aren't built on the edifice that you imagine they are. What you're doing, in examining the edification of certain disciplines, is quite postmodern. I encourage you to extend that examination to all fields.
Do you feel you are fallible in your identification of which fields are concerned with the truth and which ones aren't?
The replication crisis is a perfect example of the problem faced by all fields, of papers of questionable veracity being accepted by peer-reviewed journals. Convenient for you to say it is not up for discussion. However, I am casting a critical eye on your seemingly infallible nature, and I choose to consider it relevant.
You're absolutely right. Now, feel free to explain how that is relevant to THIS issue.