I’m having a hard time figuring out if this State of Utopia thing is tongue-in-cheek or serious.

it's serious but still a small project, there isn't much on the site.

I personally would like the law I linked to be followed. I sent a copy to the major browser makers and left this suggestion:

https://connect.mozilla.org/t5/ideas/comply-with-choose-cook...

where it got 1 kudos from a community manager but no other upvotes or comments.

The announcement of the law here on HN (linked in my gp comment) got 2 upvotes and no comments. So a couple of people liked the idea, but it's not a big hit.