It's a bit silly, there's no meaningful defense defeated here. Since the BGP routing system is almost entirely trust based a determined attacker will be able to

It's a bit silly, there's no meaningful defense defeated here. Since the BGP routing system is almost entirely trust based a determined attacker will be able to perform a MITM attack on your domain and get a domain validated TLS certificate issued. There's no real defense against this, TLS only stops dragnet attackers.