Apparently businesses don't use rolling distro.

You don't want your PHP version to endlessly get updated during your operation when you build your app at a specific version.

It would mean not only you have to take care of distro update gotchas but you have to go through all the breaking changes the language introduces.

Stick with LTS. Rolling is for enthusiasts, though Arch does have put decent efforts on their wiki but I did find errors on minor pages that didn't make it work as written.