These drugs are expensive and, at least in France, they're discussing offering them. I think this is the main reason explaining the difference in prevalence between the US and the EU.
Despite access to "superior food quality", weight issues are absolutely a problem in the EU, too. Maybe it's not at the same point as in the US, but 51% of the population of the EU (outside Ireland and Germany for some reason) are "overweight or obese" [0].
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[0] https://drees.solidarites-sante.gouv.fr/publications-communi... In French, from the ministry of health, but there's a chart which should be clear enough for everybody.
There are valid counterarguments to the overweight values, a lot of women who might be overweight are healthy because different % of fat are acceptable depending on the structure of the body. I agree, that has to do with "malbouffe" and other lifestyle choices. As for offering them that is a nice thing, but I am curious about the mechanics (mutuelles) and such of the medicine.
I can't get a solid statistic on this, but didn't the obesity rate basically plateau last decade in countries like Italy, France and Germany?
https://data.worldobesity.org/country/france-71/#data_trends
My country (Poland) is an unfortunate leader in childhood obesity (and close to the top in terms of obesity in general), but it's very easy to see why: people live very different lives than they did just 20 years ago.