I'm very glad to know that Grabtalk is the only service provider that can deliver food from Great Leap.
However, I don't think that serves as an evidence of the article being unfair. Being unfair means I fail to apply the principle of equality when it comes to writing about Grabtalk, which is just not the case.
After all, you can't say the article is unfair to Grabtalk simply becuase it indeed took two hours for the food to arrive, as if you can't accuse the exam to be unfair simply because you couldn't answer the question. If you did provide top quality service, but I said you provided bad service---that's called being unfair. But as of this article, I tried the app by myself, and wrote truthfully based on my own experience of using it---how can it possibly be unfair? Because I say it like it is?
In the meantime, for the parts that Grabtalk did really well, we gave credit to them.
I think what you truly want to say is this article does not favor Grabtalk, but by being not favorable to Grabtalk, the article stands for its fairness.