The lies to which Macron referred were the Leave promises that the EU could leave the EU, keep all the bits it likes and dump those it doesn't
Leave also promised completely conflicting things to voters on the left and right.
Many voters quite reasonably believed the lies directed at them by politicians they trusted
- and are likely to be very angry when the government doesn't deliver the impossible after Brexit Day
Hopefully, they'll be cross because of a U-turn, not an economic meltdown.
The EU kept polite for 2 years and let May peddle her cherry-picking fantasies
while telling her privately her proposals were impossible
All because they thought eventually she would settle for one of the deals that other countries have, e.g. Norway, Canada
Finally, at Salzburg, they realised it was not going to happen and that time has nearly run out to get a Withdrawal Agreement signed off by everyone.
Without a WA, there will be no transition period, just a cliff edge after 29 March 2019
The problem all along has been that May won't accept that she can't have all the benefits of a Norway-type deasl with only the obligations of a Canada deal.
If the EU granted that, they would be dismantling the Single Market on which their prosperity depends.
That would hurt them far worse than a no deal Brexit
May should realise this
She is trying to deliver on the different Leave promises, which is an impossible task
A Canada type deal is possible only if May signs the backstop
If the Uk Brexits without a Withdrawal Agreement, then the EU will require the backstop before they start negotiating on Canada - the Republic of Ireland will insist on this and the UK will no longer be a member.
An EEA / EFTA type deal would cause much less economic damage, so is my preferred soultion, to be negotiated after a WA, during the transition period.