[AaronLancs]

I thought Mr. Robot was a USA Network programme not an Amazon original.

Quoted from the Wikipedia page under Broadcast:

Mr. Robot premiered in the United States on USA Network on June 24, 2015, and in Canada on Showcase on September 4, 2015. Amazon.com secured international broadcasting rights in the United Kingdom, with the first season added on Amazon Prime on October 16, 2015, and second-season episodes to be released immediately after initial broadcast in the United States. In Australia, the series premiered on Presto on August 14, 2015. After Presto shut down, the series moved to Fox Showcase for its third season and to Foxtel On Demand for the fourth season. The show aired in the Republic of Ireland on TG4.

And from the section on Home Media:

In September 2015, Amazon.com acquired exclusive streaming VOD rights to Mr. Robot in several countries. The first season became available to stream in June 2016 for U.S. Amazon Prime subscribers.

So probably Amazon in certain countries are labelling it as an 'Amazon Original' for marketing purposes.