Covid has caused lots of frustration like this- grandparents unable to see grandchidren, including newborns, those shielding unable to see people face to face for a chat or leave the house for weeks on end, children being alone instead of with friends at school, etc- and yours is another example. The best you can do is let people know.
To put it bluntly, the government can't be expected to scrap the policy on masks, and thereby increase risks for the majority, just to accommodate the relatively small number of lip readers. Whether we agree with the imposition of mask wearing or not the fact is that most countries round the world have adopted masks- many more strictly than we have, and some have to wear them on the streets- as the view is that it's safer than not wearing masks. And of course hospital doctors and dentists always wore them . So mask wearing is likely to be with us for a while but can't be permanent.