I would accept the statements of 1ke on this matter, but I don’t think you are interpreting it correctly. If we are talking about the same post, the word “binding” was not used. What was mentioned were primarily certain very narrow and relatively rare exceptions to the normal statement that a valid marriage cannot be dissolved. What I am talking about is when a marriage is not valid. It has nothing to do with whether it is binding and the process does not dissolve it. Let me illustrate with a hypothetical:
A couple, both fully initiated Catholics, both of age, neither previously married, and not closely related, come before a priest to request the Sacrament of Matrimony. After appropriate pre-Cana education and counseling, the wedding is scheduled and takes place in front of some 80 witnesses in addition to the priest and the official 2 witnesses for the Church. However, it turns out that the groom is a functional alcoholic and was severely inebriated during the entire ceremony, even though he appeared to be normal at the time. The marriage never actually took place because the consent of the groom was defective as he was not mentally able to consent at the time, and that is the sort of thing that a Tribunal in a Nullity case looks for.