Fifth Element
Legend
In this case, they are not yet accepting for-pay subscriptions, so there is no product yet to make "promises" about.If you make a bunch of claims about a product, and then the product fails to live up to those claims, that is known as false advertising, unless there are very strong reasons to consider it otherwise. Once you advertise something, you need to take all reasonable efforts to make it so.
When they have the for-pay subscriptions ready, and if they claim certain things are available (not things that will be available in the future), and they are not available, that would be false advertising.
Like you say yourself, they need to take all reasonable efforts to make these things so. But if they can't make something work after making reasonable efforts, that doesn't make them "promise-breakers" or whatever.