As someone who has my own domain, I find it very rare that I actually have to tell someone my email address out loud using my voice. 99% of the time they get it from an online profile, or my website, or by receiving an email from me, or by me filling in a form, online or physical, or a business card, or by me writing it down.

I don't see this as a valid issue to deter anyone from getting their own domain.