The fact that they're using Punycode is only a secondary problem. The first one is that Google Ads allow you to show an arbitrary URL below your ad without you

The fact that they're using Punycode is only a secondary problem. The first one is that Google Ads allow you to show an arbitrary URL below your ad without you showing that you own it. The second one is allowing the URL shown to be different from where you send the users. But I would like to see an option to render URLs as Punycode, and not their original form.