"A lot of people here must really struggle with phone and email conversations"
Please don't make idiotic comments.
There is a difference between not being able to see someone's face vs someone HIDING their face from you. The latter feels intimidating and could potentially be a security issue. It could be anyone under there.
Also: If you have mild hearing problems, like I do, then email is obviously fine and phone convos are usually fine too (lack of background noise, received held close to your face). It's different when you are trying to talk to someone on a street with background noise. The muffling effect of a cloth barrier and the inability to lip read create significant barriers.
People wear facial masks sometimes in Japan where I live; I HATE this because it causes communication problems for me (but at least mask wearers will usually push their masks down to speak if you ask them to).