I've always thought a solution like LetsEncrypt would be an ideal backdoor for LEAs wanting to circumvent SSL/TLS. The same thing applies to VPN services. Why

I've always thought a solution like LetsEncrypt would be an ideal backdoor for LEAs wanting to circumvent SSL/TLS. The same thing applies to VPN services. Why bother trying to develop tools etc that can decrypt traffic when you can just have people send their traffic to you?