[hgomersall]

The reasonable basis is that Facebook have consistently shown themselves to be a bad actor. I'm not arguing that age checks are a good thing, just that I don't see a reason why the law can't explicitly target companies that are detrimental to society. You might then argue Reddit should also be included for similar reasons.

I would suggest this is generally better than an attempt to codify in law some kind of definition of what companies should be covered.