Not that they could burn it anyway as its digital.
You can also get a paper document stating you have had a negative test result in the last few days. Or proof of prior infection.
https://www.nytimes.com/2021/08/06/world/europe/italy-green-pass-vaccination-covid.html
It says right in your link that the pass could be physical.
Yes yes, you can print out a piece of paper. Still doesn't change the fact that none of them are doing that. Unless they all decided to print it on green paper.
It's possible that they are burning blank pieces of paper, but that is irrelevant to the message. It is irrelevant to the message if someone is burning a fake dollar bill or a real one in a protest, for example.
Possible? Yeah. Yeah it's possible 100% possible. Do you see anything written on those pieces of paper? No.
And yes, it is irrelevant to the message. But what I'm saying is... GET THE MESSAGE RIGHT!
The message is "We protest the government's limitations for unvaccinated people" (which is probably everyone at that protest) not "Vaccinated People burning their passports in solidarity". One is about supporting other people, the other is about not being restricted themselves.
Your trash tweet post is twisting their protest into your propoganda. So why don't you be a decent human, admit you grabbed a tweet without fact checking, and go post a tweet with the proper reason why they're protesting.