Might is the key word.
Lots of things "Might" happen. But it's all just speculation without any sort of insight or evidence.
If he had cited reports, studies etc. in other states, or even countries that showed ANYTHING it would be helpful.
Instead he links to another Slate article (his own) with the same speculation, again with no sources or citation.
It'd be like if I wrote this:
"WhatsApp might be the worst thing that happened to Facebook. Imagine if everyone stops using WhatsApp because they hate facebook. That would be disastrous. Or what if they all use facebook and then stop using WhatsApp, that could be good or bad too.
Regardless, Facebook has a lot on its hands now."