Never heard of the .example TLD, so thanks for that. However, an issue I see with it is that it doesn’t look like a domain name. Things that end in ‘.com’ are synonymous with domain names, regardless of how accurate that assumption really is. I think people are just starting to get familiar with these new alternative TLD names, but I can easily see business people not understanding ‘myco.example’, while they would understand ’example.com’.
It'll never resolve to anything, and makes it really obvious the code is for testing or sample code.