This sure to fail garbage none the less does a lot of harm: Every time something like this is proposed people that suspect they'll be harmed by it waste time looking at it and are slightly more likely to move out of California (or to opt to not move to California). Yet because it won't pass whatever benefits it was supposed to have won't be delivered on either.
There is a lot of real costs to these bills too-- the effort that goes into drafting them, lobbying for or against them, people spending time reading them and paying professionals to analyze the impact, etc.