The assertion that the healing of the paralytic 'standardizes' the teaching on the mountain seems too categorical and potentially misleading.
In law, such a judgment must be nuanced, as the impact on uniformity would be rather conditional, depending on the observers' perspective.
For example, if the listeners were mainly concerned with ritual rules, a healing on a Sabbath day could create divergence rather than convergence of interpretation, as shown by the reactions of the Pharisees.
We must consider the reputation risks associated with the claim of absolute uniformity, which is not always evident on the ground.