The point isn't that you're stuck using Route53, it's that large, hypercapable teams, including the one at Route53, have attempted to deploy and manage DNSSEC a

The point isn't that you're stuck using Route53, it's that large, hypercapable teams, including the one at Route53, have attempted to deploy and manage DNSSEC and failed, indicating that the challenge is not simply "4 lines in a text file".