You can get a religious exemption[1] and Florida was in the news recently about a measles outbreak where their Surgeon General advised parents of unvaccinated kids to make their own choice on sending their kids to school or not. [2]
You can also google Florida student MMR vaccination rates and most results are closer to 90% than 100%, so clearly people are taking advantage of exemptions.
I don't think traditional American understandings on freedom were for state identity document requirements.
That's why we have no federal IDs and social security numbers are abused and why we use driver's licenses for identification cards.
When detained, you have a right not to give police papers proving who you are, you just have to tell them your name. [1]
So Florida pushing the concept of using state id to verify age to access a website, which is probably what this law requires, is kind of against that tradition. [2]
To be clear, the point of the article is a change in the age of unrestricted access to certain social media sites. This is a change in the definition of who qualifies for freedom. Which documents are used to establish that identity is tangential, there is no perfect form of identification that is also free of potential for abuse
You can also google Florida student MMR vaccination rates and most results are closer to 90% than 100%, so clearly people are taking advantage of exemptions.
[1] http://www.leg.state.fl.us/Statutes/index.cfm?mode=View%20St...
[2] https://www.washingtonpost.com/documents/d561ec38-808a-471f-...