The EU's negotiating 'red lines' are simply the rules of the club, I don't know how many times I can possibly explain this, or rearrange the words into a different order, but the rules have always been crystal clear, and were clearly explained many years ago, there's the well known graphic that shows how the UK basically ruled everything out with its actual red lines, that under EU rules left it getting a Canada
STYLE deal, (not the exact same deal as Canada, as already covered).
I mean, wasn't one of the main points of Brexit to ESCAPE FROM THE RULES OF BRUSSELS? So we can hardly call foul when we leave the EU and then, as a third country, the EU erm, apply those rules to us based on what level of level of access we wish to retain. (Which we absolutely are doing, witness the issues around hauliers' rights that cropped up last week.)
This all comes full circle back to how Brexit works as a slogan, but it doesn't work in reality, and the second any sort of scrutiny is applied to it, the only comeback from Leavers is that it's still the EU's fault.
On that point, I note how you're already setting up the 'betrayal narrative' so that if the UK should compromise to get a deal, then Brexit will have been betrayed, because it's not 'proper' Brexit.
But then, what is 'proper' Brexit, the one that shoots us in the foot? (Your words, not mine!

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