Good grief, I've just tried watching the Russell Kane clip - what a complete and utter oik - as if I'd take any notice of what a person like that says.
As to the science, then 'science' is still arguing about it, as far as I'm aware - some for, some against which makes you wonder if they can't get something like that right, then they don't really know. I don't think any scientist argued against the use of seatbelts back in the day, though.
And now I'm just repeating myself, but Why, if the facemasks are so effective didn't they make them mandatory back in March? Why the shop worker/shop visitor discrepancy and why the shop visitor/office worker discrepancy?
Still, I'm not posting on this any more. You are wasting your breaths trying to convince me that there's some point to masks, and I'm wasting my time trying to convince you. I've got to wear them, end of, but I will not do it without protest.