while i am sure they would rather avoid it just stop oil are prepared to get hit... it means more disruption to courts, jails etc. It is part of nonviolent activism and civil disobedience... you have to be prepared to get hit and not hit back.
at present they have plenty of volunteers ready to take the place of anyone arrested or beaten or dragged off... they are able to arrange their slow marches every weekend now. beat up one... another takes their place, you end up charged with assault and JSO continues to gum up the courts.
ultimately however their disruption is as nothing
compared to the impact of climate change, which is also being inflicted on all of us against our will and is a genuine global emergency. catastrophic climate change will result in worse than missed hospital appointments... much much worse.