Live Relay is similar to using a TTY device with a relay service such as Florida Relay or Sprint Relay. Voice recognition has improved dramatically over the past couple of years but still needs a long way to go.
No need for dialing 711 and no need for TTY.
Even if I do want Purism Librem 5, I HAVE got to give credit to Google for making technologies accessible for those who are deaf or hard of hearing. If only the open source community could step up and make it easier for deaf to make and receive phone calls with a smart voice assistant.