TTT: // "For example, such deals represent the current best the UK can achieve in its negotiations with the EU," - rubbish, the problem is we tipped our hand from the start... //
Even if you contend that the UK could have done better (and even that's debatable), how does it undermine the claim I'm making? Either because of its own incompetence, or because of objective reality that no amount of determination could overcome, the UK has "succeeded" in negotiating a rotten deal. But, whatever the course, that is the deal on the table. We must now either accept it (on the dubious grounds of "getting Brexit done", whatever the cost), or choose a significantly worse and more destructive path ("No Deal"), or revisit the question altogether. Turning back is always an option.