I’ts really quite simple. The law does not forbid “lane-sharing” It is not lane-splitting. Lane splitting is the act of riding the Bots Dots, lane-sharing is using the extra space in the 10-12ft lane that a car isn’t using. Typically the fast lane is the lane of choice for this maneuver.
I can count on both hands the number of times its saved my life, because inattentive “cagers” decided to ignore safe following distances and not be aware of the slowing traffic in front of me. The most memorable was a Volvo wagon rear-ending the Corvette I was following, until traffic came to a screeching halt. I lane-shared, and the Volvo impacted the Corvette instead of me and the Corvette!
I swerve to the shoulder during sudden backup as a matter of practice in a car (that "cager" thing is the most embarrassingly gay slang term I've ever heard , BTW). I really doubt a cop is going to give me a ticket for driving on the shoulder to avoid a collision. Perhaps one for tailgating, which you would face on a bike as well.
So it's a bit silly to say that a law that allows motorcycles to drive between lanes to advance in stalled traffic saved anybody's life, wouldn't you say?