I find the whole Labour support thing fascinating, independently of what I personally think about it.
If you took a very Machiavellian and distinctly non-parliamentary approach to class struggle, then you've got some interesting questions to answer.
Would a Labour Party success at best placate the people and therefore further delay more meaningful change? Conversely, would a Tory win hasten a dramatic collapse of existing systems and therefore be a long term positive?
But simultaneously if the people can't even be convinced that Labour's if-you-prefer-a-milder-reform is necessary and positive even at this late juncture, then you've also got to address or recognise that the political landscape is really not aligned to whatever you're banging on about. Maybe you can explain that away as being a facet of the current system rather than true expression of goals but it's not the easiest of sells.