If you don’t exceed a single deployment, it’s fine.

If however in the future, you want to add additional services to your host, let’s say an alerting or status system, it’s a lot easier to declare everything in a single place and then attach a reverse proxy to manage networking multiple services on one host.

As I use docker for most of my deploys (as you should for websites exposed to the Internet anyway), I can wholeheartedly recommend traefik for this. Basically it has the functionality of nginx, but supports easy Let’s Encrypt certificates.

The German system is what the US would have been if they would have regularly updated their constitution.