And even if he personally is turned off the issue at hand because he experiences some personal convenience, so what? He's not the target audience of the protest

And even if he personally is turned off the issue at hand because he experiences some personal convenience, so what? He's not the target audience of the protests, just collateral "damage" (if you can even call it that). Government officials and all the millions of people reached by news media coverage of the protests are the real target audience. And you can't deny that it's working; year-on-year nationwide opinion polls show an astounding reversal from majority disapproval of the Black Lives Matter movement to majority approval. It's been the most successful modern protest movement going possibly all the way back to the 70s. So who fucking cares if some people got stuck in traffic. The protests are working, and the people who weren't even stuck in traffic but are complaining anyway because they hypothetically could have been (like this guy) should just be roundly ignored. Listening to their opinions is a terrible idea if your actual intent is to further the movement.