Makes sense that AWS would recommend these stacks (they are probably compliant with their Well Architected Framework), though the idea is to recommend something

Makes sense that AWS would recommend these stacks (they are probably compliant with their Well Architected Framework), though the idea is to recommend something that can scale de facto infinitely with minimal SMEs required to run it all. I agree that aiming for the simplest service your team can maintain is the best approach, scaling up as needed.