This was a Critical Mass event, which is why the bicyclists are taking up all of the street as a way to reclaim the streets and protest the lack of safety for riders under usual conditions. It’s not legal, but protests are never useful if they’re fully legal now, are they.
The drivers are the ones pushing the government to not expand bike infrastructure. There are massive complaints anytime bike Lanes or other protection is installed in major cities and anytime it’s put up to a vote it’s the car drivers out there voting no
Seriously, like has that dude never heard of a NIMBY?
Drivers fight tooth and nail to prevent anything from being implemented if it means they incur even the most mild of inconvenience.