What is the Green position on the proposed destruction and industrialisation of vast tracts of the Welsh uplands?

Of course they do. But the essence of the Green party should be sustainability and ecosystem restoration. There's no mention of either.

What's any of that got to do with saving the planet?

Plenty of disenfranchised voters, particularly those living in the EU at the time, would have voted remain given a choice.
Plenty of lies and half truths offered by the leave campaign.
And,as far as I can see,the only benefit has been leave the CAP.
What do you identify as a benefit?

Not for the demo.....But they do for supporting and enabling brexit.