In free societies, bans should be the last weapon of choice. By default, any activity should be allowed, many of the allowed activies should be regulated and/or taxed, but outright bans should be very well justified.

Otherwise you will end up with a chaotic-authoritarian system banning whatever the current Zeitgeist feels icky about, which in the era of social networks means twenty different things each year.

It's a free state. Like the Swiss banned minarets in Geneva the Mainers should be allowed to vote to ban datacenters. AI bros can always opt to build their stuff elsewhere, like Texas or Abu Dhabi.