Yes, I read it. Did you? It said:

"Mickleborough said the emoji amounted to an agreement because he had texted numerous contracts to Achter, who previously confirmed through text message and always fulfilled the order."

It does not say that the argument was made that he previously agreed to a contract through text message _ by sending a single 👍_.

This is the context we have through the article, and so no, a single emoji as a binding contract is ridiculous.