I don't think people realise that what was announced yesterday wasn't choice but responsibility. Instead of the legal mandate, personal responsibilites should continue. From the three at the conference, the only situation where one person (BJ) said he wouldn't wear a mask was late at night in an otherwise empty rail carriage.
I don't think that's responsibility though, that's what might have been said, but some guy not wearing a mask on the tube and passing onto 3 rather than 2 people won't feel once ounce of responsibility, and neither will they have to suffer for their actions (they probably won't even know). It's not responsibility when you have next to nothing at risk, and you're increasing risk everywhere else.
The problem we will have is the people who have the ability to be responsible, will be and those that don't, or don't want to, won't, there's pages of evidence in this thread that this could be the case.
It's like making a doctor responsible for one leg amputation, and a clown responsible for the other, it's just not a good idea.
You can't give people too much of a choice, on complex issues, when people are still saying crap like "masks don't protect you", not realising that is not their main aim, and they do still offer minor protection (in line with the quality of the mask).
They could have just said (for now):
Keep masks on for public transport
Keep masks on in shops
Take masks off in pubs/ restaurants
Take masks off if you have a
valid medical issue
Then once we're over the hill (a few months), we can remove masks in all settings