I don't think that anybody has 'forgot' anything, including GBN
May's redlines have been and gone.
They are now totally irrelevant to any future discussions because she no longer represents the UK.
If, and it's a big if, the EU side can get their heads around that fact that they didn't have a deal, but merely the proposal of a deal, then things can hopefully move on.
The real point now is that the UK is leaving, with or without a withdrawal agreement.
Article 50 gives both parties two years to reach a withdrawal agreement.
Nowhere does it state that this is mandatory.
If an agreement cannot be reached and ratified by both parliaments, then the leaving country just leaves.
That is my understanding of it.