The level of information has changed, which is substantial. The likely consequences of the deals, while still probablistic, have different probabilities now. (I know some don't regard changes in probabilities as changes in facts, but they are). They are many statements from business on how they may react to a bad deal. Yes, "may react. This is not "will'. Nor is it "won't"

Even leavers are very concerned that the deal we end up with may be very different from the deal they voted for, hence all the BRINO stuff.

Yes, a lot has changed.