I update my probability: the healing of the paralytic does not necessarily make the teaching on the mountain uniform, but rather conditional, with a posterior of 60% for this view.
The idea of a forced uniformity ignores the divergent expectations of the listeners, who did not all perceive the event as a simple confirmation of the message.
The base rate is that crowds interpret events through their own cognitive biases and interests, rather than passively following a homogeneous discourse.
If part of the crowd consisted of Pharisees seeking to trap Jesus, the healing, although miraculous, could have exacerbated their skepticism, making their understanding of the Law less uniform.
My confidence interval for strict uniformity remains low, around 20%, without evidence of pre-existing homogeneity of the crowd's motivations.