Which based on the dates would be months of early access because release is stated as Jan - post (sometime after Jan) and reinstated free period is before at oct-nov. So that should be your real complaint which is also unrealistic, which you also stated because people would be upset for such a head start.
I am not trying to defend SE, I am just pointing out the flaws in your interpretation.
I also think as I have stated many times it would be good marketing for them to give a period for those who quit long before a chance to come back and play but I am guessing they think they will come play beta 4 if they have interest, though as I said I don't class this as a free trial period either.