As I recently observed [1], there is a lot more of this sort of coordination than people realize. I personally know of about three groups trying to get some cross-state initiatives implemented at the state level, and I'm not even particularly looking for such things.

It is not a coincidence. It means there is some organization out there pushing these. In general, "organization" here applies very broadly; there are some cases where it pretty much is just more-or-less normal people who organize to get something done. I wouldn't expect this particular thing is that for a second, of course. I'm just saying in general the term applies broadly. Someone is organized and trying to push this.

[1]: https://news.ycombinator.com/item?id=46873297