I understand the post as being an explanation. That a call for the next referendum will be when the polls suggest it'll be won by those wanting independence, regardless whether most of the time folk feel the other way about things, AND they can claim they aren't getting their way in that part of the UK and getting the best their area could.
Basically just a, "we'll call for another vote when it looks winnable and will be never ending in looking for that point regardless how close it was to a previous vote we lost". Implied being that the vote to rejoin the UK would not be based on similar opposing conditions, which would not be monitored for. It's a case of a hundred no's and one yes means yes.
A bit like the EU voting strategy really.
As for abandoned statements, that's politics. You get the same every election with manifestos. And everyone must have been aware the, "you will be given special status, anything your heart desires regardless how unfair to the rest, is yours", promises were unlikely to be progressed. It was outrageous some of the things said anyway.