As a person over 50 with significant underlying health issues, if I still had a face-to-face job, where social distancing is impossible, I would welcome the protection from compulsory shielding.
I don't understand the mentality of people who would deliberately put their lives at risk when an alternative could be found.
My daughter is an HR Manager in Greater Manchester. Her company hasn't furloughed anybody, but have had people working at home, some doing their normal job with strict precautions and have redeployed those with health risks to safer environments.
The company was planning to put at risk employees back to their original roles, but that's now been put on hold, as a result of the situation in Manchester, about which they were given no notice.
There are less scrupulous companies who would insist that vulnerable people do their normal job, which could put them at risk. If they refuse, they're sacked - and it's already been happening. It's far better that those people have some kind of formal legal protection against unfair dismissal.