The problem of having an opinion and wanting the evidence to fit it. I’ve corrected the post to (hopefully) address my error.
I don’t think, as I said in my footnotes, it changes the main thrust though, that dialogue, shared understanding and mutual goals should be the ideal for local government. And learning from what didn’t work, as well as what did, is important.
One thing I am looking at (for something else) is the differential between election results across London and the swing towards the controlling Labour group in Lambeth was among the largest in London. There are lots of other factors, and I’ve not looked at ward level, but it might suggest there is some electoral benefit in such engagement, even if it isn’t always totally successful.