Which means the system is less effective, as then those who could wear coverings but don't like it then don't. And many such people are younger and so less likely to distance and so pose a greater risk.
The mind boggles as to why those with genuine exemptions don't want those exemptions keeping for them. After all, if everyone who is not exempt wears a covering, it's safer for those who can't, too.
I suspect those shouting about it in here are people who wouldn't get an exemption if it had to be given formally, though?
But there is still no even remotely-convincing evidence that masks make any difference anyway...
As regards exemptions, yes I can justifiably claim an exemption, but I don't actually believe that masks make any difference in any case. If I see someone else not wearing a mask I really couldn't care less what their reason is, or whether they even have a reason - it's absolutely none of my business.
And yes, I would have genuine grounds for an exemption if there was a formal system.