I personally think it's all a bit silly, and when my Mrs was at home off shift last week she wouldn't even go outside at 8pm because she found it embarrassing.
I thought that would be the general feeling of front-line NHS too.
We're British and this doesn't feel British.
It reminds me of that stupid 'Red Friday' malarky where people would wear red on Friday to show support for the armed forces when they were getting smashed in dusty places. It was popular in the USA, but despite efforts, it never caught on in the UK.
We're not very good at cringe. That's why we don't say "Thank you for your service" to our military like the Septics seem to be so fond of doing.
The British way would be to donate a little money to the Cavell Nurses Trust, or buy a nurse a pint and offer them a few words of encouragement. And give them a gong, after the event.
Not make a song and dance about it.