The relevant law had been in force for two decades before facebook ever became relevant.
It seems they are referring to this as a "landmark" ruling because it's the first one with a "payout" condition.
ie. Meta is at fault, as opposed to a criminal intruder.
Are campaigns influencing elections when they use credit card purchasing data and so on that they buy? Why isn't that the same scandal?
I am vehemently against it, but no matter which party you choose to vote for, the result has been the same.
(Aside: An amusing thought experiment is how voraciously would the Australian government pursue Murdoch's media empire had it committed a similar act? A $50 million fine would kill it's Australian enterprise, or at least be nearly-fatal, I'd hope...)