I don't. I don't think anyone is entitled to a payout, as Facebook users did not pay Facebook causing some sort of breach of contract. They are owed nothing IMO.
Yet the legal system gives people an incentive here to sign up for free services so they can one day reap the rewards when Free Service X slips up and breaks State Law Y. Admittedly, the rewards will be small. But nonetheless, it is an incentive and aggregated across society it isn't nothing.
This sort of litigious behavior just slides us further and further into a culture of dishonesty and makes a mockery of the justice system.
Also, let me be more specific given there's another thread on here about this. What makes anyone think they're entitled to "$5,000" for signing up for a free service and uploading their photos to it? This is absurd. Please explain specifically how running a facial recognition algorithm on person's photos is equivalent to "$5,000" worth of damages. Where did that number come from? Why not $1 or $1,000,000?