Last Generation Austria (Letzte Generation Österreich) disbanded recently, because they can't handle legal fees anymore. Others are on the same path.
While protesters for other causes face no consequences, climate protesters get arrested regularly.
For example farmers in Germany protested that they don't get subsidies anymore for using diesel engines, blocked
and hindered main streets, people and buisnesses. Held a ferry full of people hostage because a politican with his family was on board, with no real negative or legal consequences.
German government caved to the farmers, while at the same time charging climate activists en mass for blocking highways and such.
It is not just climate protesters getting the brunt. Anyone protesting for human rights, anti discrimination, anti fascism or any progressive cause will get various levels of supression, if not just straight up police violence.
Meanwhile literal Nazis are treated fairly nicely and during Covid the police was beating up permitted protests to make way for non permitted Nazi/Esoteric/Conspiracy protests.
Certain countries, such as the one where The Guardian is based, have long been infiltrating, surveilling and even using anti-Terrorism legislation against Ecologist groups.
They treat Far-Right extremism significantly more mildly than Environmentalism.