I haven't read Blair's article yet as my copy of the
New Statesman arrives on Saturdays these days (it used to arrive on Thursdays).
I very much doubt that Grant Shapps (quoted in the
Daily Mail article about the
New Statesman article) had read it either when he was asked by
The Wail for a predictable quote which he duly gave.
If Blair's article really is accurately summed up by the soundbite "Labour should be the seekers of answers rather than just a repository for people's anger", then it's a fair point, Labour shouldn't be letting the tories set the agenda, as they'll just be seen as negative nay-sayers of tory policy.
If you only react to what the Tories do, then you are letting them determine what you talk about and all the Tories have to do is point at each example of Labour's nay-saying and add it to a list of money-not-saved.
Labour needs to start revealing policy now, at least in general terms. Obviously detail can't be brought out now because, not knowing what the situation will be like two years hence, you can't cost accurately this far ahead of an election.