There's nothing wrong with the RF70-200mm F2.8L. It's an amazing lens and so fast and sharp when paired with the R5. They might do a version with internal zoom but it will be bigger due to simple physics. The size of the RF is great for carrying and storing in a bag. Like you I cant see the issue, apart from it's not cheap but then quality never isWhat's the problem with the RF70-200mm/2.8 (external zoom)?