I wear a helmet and leather when I ride my motorcycle. Obviously, it'd be safer to never ride the motorcycle. But, I want to the ride the motorcycle, so, if I'm going to do it, it makes sense to mitigate my risk on it.
If people want to go to protests, they should, however a killswitch isn't good enough imo - you should leave your phone at home so the cops don't steal it from you, force you to unlock it with your fingerprint or faceID (a valid legal order in the USA), and then hunt through the contents to hit you with some bogus charge.
First and foremost, it would be less noisy! What MC riders tend to conveniently forget is that they are putting the burden of having to deal with the noise they produce on everyone around them. Yes, your safety is also important (for you), but the noise you're producing is an issue for everyone around you.
Also, imo cars and their driver's dependence on them are a significantly greater cause of noise pollution than me and my stock pipe motorcycle, or even a harley. Hundreds of car tires rolling by on the road all day every day is so horrendously loud I can hear it from the 21st floor of my parent's apartment. When the 3 nearby red lights line up perfectly it's suddenly so quiet you can hear the cidadas on the mountain.
Not to mention the beeping, in the city I can hear a car beep from hundreds of meters away, echoing off the buildings. Or sometimes when I'm a pedestrian they'll dare to beep at me for the crime of walking in a way that inconveniences them, that's very very loud!
I take my motorcycle from my apartment straight into the basically unlived-on mountain roads, two weekends a month at most. I highly doubt I'm burdening anyone even a fraction what the average car driver does to tens of thousands of people every week.