I'm sorry but you don't seem to understand human beings either. Just because drivers get angry and demand a crackdown doesn't mean a crackdown actually is feasible from the governments point of view. The drivers for which this is the reaction fundamentally don't matter to the protestors. What matters to the protestors is political change, the number of drivers they directly impact is small, the number of people being told climate change is an existential threat is disproportionately large. Which furthers their political goals on the whole, even if everyone hates them.

This entire argument is the same argument against every "civil" and not so civil protest, public disobedience or other dissent. BLM 202x FFF 2019, Antifa since 193x, LGBTQ movement, women's rights, they all get this same argument against them: Why won't you just be civil, why won't you play by the rules, why don't you try to gain sympathy from your political enemies.

As if that'd work, as if that'd be sufficient to keep your own freedom, live and livelyhood, inside of a system that tries to take it from you. How could you ever trust in the process when you've seen it fail time and time again, specifically for the issue that is of concern in your group.

This is the other human you failed to account for, the protestor that isn't going to stop, because they deeply believe their way of life is threatened in a way where a more direct confrontation is necessary. And they rightly understand that it's a confrontation with the entire system, not with some commuters on arbitrary streets.