The Stonehenge stunt was an ineffective attention grab. Vandalizing the private jets was an effective attention grab.
Like if some Just Stop Oil activist took a shit in the middle of a busy NY street that would get them a lot of attention, but it wouldn't be even remotely positive or effective in any way.
They should stick to vandalizing the property of the biggest culprits of climate change. I and most other leftists can get behind that, and it actually puts a spotlight on the people causing the problem. The Stonehenge stunt just comes off as a petty attack on the public who has little to no say on climate issues.