> Taking away liberty must be very, very carefully considered
I agree, and it's possible that this move has been very carefully considered. The obesity levels are catastrophic, and the trend has been clear for years (maybe decades), so it's quite possible that this move has been considered for some time before finally being implemented. There's no reason not to give the benefit of the doubt here.
I'd also add that any move to take away liberty needs to be reviewed at some point. Otherwise the tendency is for more and more regulation. Then typically the only way things get changed is by major lobbying efforts, which can takes years or decades, or when a negative effect on society has become such a problem that it's no longer possible to ignore it. In the meantime, a lot of people have had their lives impacted.
> Banning imported food at tourist established is a much less obvious win
Yeah, though maybe that part is related to the "effort to promote local agriculture" that's also mentioned in the article. It still seems like something that would have little actual impact - it's hard to believe that tourists are coming and only eating junk food, and not any food that's locally grown. No-one goes on holiday and eats only Pringles.
Or maybe it's about perceived fairness - staff at tourist resorts have access to foods that the rest of the population can't buy, so they remove that access to put everyone on the same level.