True! But, you wouldn't just need SRV support in browsers--you'd need it in every part of your dev environment / stack that touches the network. If your backend talks to a database, then your backend needs to support SRV. So you need SRV support in your standard library and your browser.

But at a larger level this tool just makes everything work so smoothly. If you have two services with the same name, it pops up a notification in the tray. If you start a new process with a different name, you don't have to configure SRV; the DNS just becomes available automatically. HTTPS is auto configured. That sort of thing.

I think somebody could one day make something like this that was based on SRV, but it would still need all those niceties to make it work well for developers.