Ok, recognizing it is legal in some places and not in others is a good step forward.
Now try recognizing that the reason it's legal here is safety. And that whether or not it's legal there, it may be safer for cyclists everywhere to use the whole lane in some circumstances.
You can't just claim that your rules are the perfectly balanced ones, while the California rules are foolishly wrong and dangerous. Especially given the article we're all commenting on, which shows that even very reasonable bike-friendly rules changes can take decades of effort.
Yes, sharing the road is important. But as somebody who uses multiple modes of transport on the regular, I'm confident in my judgement that the existing standards overly favor cars. If sharing the road is truly what's important, the work ahead of is is much more about improving access for bikes than it is for cars.
Should cyclists in a peloton make it easier for cars to pass? Sometimes! And sometimes they shouldn't, because that would put them more at risk of dying at the hands of some irate dick.. If you can't see that, it's probably because you're not a regular distance cyclist.
Now try recognizing that the reason it's legal here is safety. And that whether or not it's legal there, it may be safer for cyclists everywhere to use the whole lane in some circumstances.