The idea of trying to ditch the WA has been around for a few weeks now.
This is from Prof. Chris Grey's 'Brexit Blog' 17th July:
The proposition in the CBP report, of course, is that whether or not there is a deal the WA should be ditched.
It is, frankly, an insane idea – politically, legally and diplomatically - but it grows from the long-evident way that the Ultras are never satisfied with Brexit, however hard and in whatever form. This is partly because the ideas they have of what is possible are total fantasy, and so as soon as they encounter reality, as they did in the Article 50 negotiations, they are doomed to be ‘betrayed’. But the deeper issue is that there is, actually, a desire to be betrayed, a desire always to be campaigning for something even more extreme, always to be insisting that Brexit is being denied them. In the most recent example, as in the past, this extends to denouncing as betrayal even things that they themselves have supported or voted for in the past. It is a pathology which has totally deformed British politics so that, now, at the moment of their victory, they are still complaining, still unhappy, still spitting out vitriol, still blaming remainers.
Clearly, there are significant and dangerous connections between these demands to scrap the WA and what is emerging about the effects of Brexit. For as these effects unfold the Ultras will never admit that all (or anything) that they were warned of was true. Instead, they will insist that the effects are the consequence of Brexit not having been done properly. In this way, they keep their dream and their pathological victimhood intact, whilst blaming remainers for the effects of the policy they themselves advocated. It is a form of politics that is deeply immature but, worse, totally destructive, endlessly revisiting the same battlefields until there is nothing left but dirt and ashes.
Its consequence is likely to be that even as we all suffer the many adverse consequences of the Brexit they forced on us with lies and fantasies we do not even get the consolation prize of an end to their complaints, their taunts, and their vicious slurs. Any kind of hope – as proposed in my recent post – of initiating a new post-Brexit conversation with and about Europe is dashed as a result. Any idea of healing domestic divisions is destroyed, because these Ultras do not want to heal divisions: they thrive upon them. So we get Brexit and we also get endless screeches of Brexit betrayed. They now call the WA a “poison pill” but it is their own poison, one which has now infected the entire body politic.
chrisgreybrexitblog.blogspot.com/2020/07/brexit-gets-more-real-brexiters-get.html
I found these observations profoundly depressing because I fear they are accurate... We will never be free of Brexiters moaning that it's all been done wrong and isn't separating us enough from the EU.