"If I'm not going out why do I need 3 weeks worth of heavy duty masks? Would we be expected to isolate from other household members during the 3 weeks (Never mind a mask, I'd need to be supplied with a bigger house if so)? Would we be allowed in the garden during the 3 weeks? I'm presuming you'd let me out to go to the bins rather than keep rubbish and used cat litter indoors?"
Yes. separate family members should each go in one room, and if there aren't enough then they should just find a space in a local park to stand in for 3 weeks, 10 metres apart...
For crying out loud, why does a suggestion always have to be taken to the extremes?
Look at what we know - we know that outdoor spread is really difficult, so people could still carefully go outdoors, and go in gardens if they have one, parks, though for walking along busier streets, wear a mask.
If you're not going anywhere for the 3 weeks and would prefer to stay in then, no, maybe you could donate your free masks to someone else who does need to go in.
Essential workers could still work, just be provided with decent PPE - again, not "Oh, so a farmer has to wear full PPE now! That's insane!" - no, people would have to look at things sensibly. If someone works outdoors, alone, or in tiny groups in big spaces then they might not need the same PPE as anyone going on a tube, or dealing with patients.
A bit of common sense and we could get numbers down so much further. We don't have to wait for government to say exactly what exactly each person's risk is. We don't have to helplessly sit back and say that 1000 deaths a month and tens of thousands of long covid sufferers is okay.
No wonder this thing is going on and on.