Au contraire, it's central to my point. Politics is about measurable outcomes, no? Not idealistic fairy tales, right?On the contrary. If there is a Green party candidate standing, they have the
very real option of voting for that Green candidate.
The fact that a Green candidate there was unlikely to win is beside the point.
This was a group of people trying to achieve a measurable outcome. You can disagree with it as much as you like, I don't mind, but they were in no way abandoning their voters. They were trying to achieve material change knowing that otherwise their presence would have no impact on any outcome, except literally splitting the vote.
And I'm sorry, but ~1,000 votes in that constituency isn't influencing anyone or anything. On top of that, the objective record states, our political parties (including, infamously, the Lib Dems), only ever move right to compete for votes. They don't move left. At least in modern politics. Even New Labour brought in decidedly right-leaning policies in the early-to-mid-00s to maintain relevance (to say nothing of the fun that was Iraq).
But hey, maybe in a few years you can tell me I was wrong. Regardless, you certainly can't say that with any confidence right now.