The only ones arrested/fined were a handful of people that destroyed stuff. The rest was just moved away from the highway cause that's a dumb place to be. Nobody got hurt.
That's a self-reinforcing argument though. As climate change gets worse because of use of "cheap" energy from fossil fuels, temperatures and weather events will get more extreme. Which then can be used as justification to continue using those energy sources to cope short-term with the damage they exacerbate long-term.
Also, note that renewables are way cheaper than fossil energy sources. If they are available of course. Available as in "built and working". Even with storage costs factored in they are cheaper.
Everyone was arrested in this case. A judge ruled the use of ‘burgerlijke verplaatsing’ which you describe as unlawful here after the Zuidas action. Now when they put people in buses, a prosecutor comes into the bus, formally arrests everyone, and then formally releases them pending further investigation.
I think it’s a farcical ‘arrest’ and completely goes against the judge’s verdict but that’s how it happens now.