You should probably ask Junker and co that one?
Dave Cameron said that , if we voted to leave Europe , it would be a clean break and we would get nothing ; no customs union , no single market . In January of 2017 , May repeated this, it would be a clean break , no quasi membership. She then went on to sign that treaty , so you are right the goal posts did move.
I really don't know which point you are trying to make here and have to wonder , l really have to wonder if you do. .