Actually NO. Your expectations are YOUR expectations and don't factor into any objective view on the game.
It can only be about hard facts. What features where announced. That's it.
That is your personal view. That is fine. If for your the sandbox is empty leave it. But don't tell all those kids who are happyli playing with there toys in the sand that they don't can have fun and DON'T expect someone to change the sand that is there for those other kids into the sand you wish you had.
Sorry but this is incorrect. As long as I pay, if I want mining done with a showel and they don't implement it, I have all the rights to complain about it.
In any other field, if you sell a product describing it, and then the description does not follow with what is the expectation, you have the right to return the product and bash it as much as you want. It is called free commerce and merchant feedback. With a game is different because it is not a tangible item, but if you promise something, and implement it in a way that define "barebone" is offensive to a real barebone feature, then it is a different story.
I was not expecting to work as interstellar nurse and give birth to some alien baby; so the argument that you bring on the table, about my expectations, is not acceptable in my case.
Plus, what is wrong to tell the other kids that the sandbox is empty and they are just in denial? Your approach is something that we see too often, and this behavior of putting the head under the sand or avoid to talk about something, should change.
And I am not criticizing if a person LIKE the game or not; I won't be the one that goes to the guy and say "your game stinks, don't you see?"; this is purely subjective. This thou, won't hide the fact that the game is minimalistic at most, empty for the majority of the time, and overall lack on almost any aspect, beside gameplay and graphic.
But even that is arguable, by some; since there is so little to do, that do it wrong would be an accomplishment.
I recognize hard work, and don't blame devs, but whoever put up this circus and designed the features (which from my understanding is not DB...there are people that financed and produced this game)