Oh it's all positioning for the "Labour support Just Stop Oil" campaign that's coming.
Equating Corbyn with terrorists worked well for them in 2019 so they are just trying to set up the same for Starmer.
It's quite interesting to watch really. They tried the Saville smear and Starmer responded with the "Rishi supports child abuse" posters, then they tried "at least Conservatives know what a woman is" and labour said woman = adult human female, no self ID. So now they are trying this instead.
However I think the juxtaposition of the message with all the wildfires/global temperature increase might backfire on them. I hope so anyway.