The very podcast I linked describes a pattern common in previous protests like blocking a bridge: people say "this is annoying, but actually thank you, this is important". Lots of people ARE thankful for those doing something more aggressive than they are willing to do themselves. Others complain a lot but this makes the topic of the protest become a topic of discussion, much as you think and talk a lot about the issue around the pain you have when your immune system flares up.
Really, listen to the podcast.
There are indeed lots of questions about the right way to do this.
When your body flares up like crazy over an allergy, many people indeed get contemptuous about their own immune system rather than just hate pollen. So, it's not like just any and all mayhem in the name of a cause is helpful…