This is simply incorrect. It depends on the grade of mask. Simple surgical masks or fabric masks protect other people from the wearer. FFP2/3 grade masks protect the wearer from others.
I am immunocompromised and wear an FFP3 in shops, on public transport, in hospitals etc. I have been yelled at, spat on, and physically assaulted for doing so. (Yes, I have been yelled at, spat on, and physically assaulted - struck in the face! - for the act of sitting quietly on a bus in a mask. Do people on this thread realise the real world consequences of their attitudes?)
As it happens, my sister is deaf. Masks certainly impair communication, and this is especially difficult for those with hearing impairments. But I cannot reasonably be expected to sit in silence on a bus without a mask, putting myself at risk, in case a deaf person comes on and wants to communicate with me. (If that happens, I can briefly lower the mask.)
Does the OP want me to sit at home forever rather than getting on with my life and wearing a mask when needed?
Banning face coverings, and expecting those of us who are immunocompromised to disclose our medical history in order to access public spaces, is overt disability discrimination. It is unlawful, and anyone doing this should anticipate being on the receiving end of legal action. Disabled people are fed up of being hounded out of public life.