You can make superhydrophobic surfaces with laser etching that affects the nano structure of the metal. Thus if you take a strong metal and laser etch it there is no need for potentially dangerous Teflon coating.
Why? Typically, whenever you do something in the large scale, you can amortize the capital cost of the equipment to zero (economy of scale) and if the product is popular, inventors will come up with cheaper ways to run the manufacturing facility.
That said, lasers do use lots of power so it will probably be marginally more expensive.
It's not just capital cost for equipment that needs to be considered at this stage, but also the research needed to make suitable equipment for large scale production. Per the article, a 1"x1" section of metal takes an hour.
Maybe some day, but then "there is no need for potentially dangerous Teflon coating in 10-15 years" would be more appropriate.
How well does that surface withstand wear? If the property is dependent on "micro- and nanoscale structures" as claimed in the article, then surely a few months of use will destroy those structures.
https://www.rochester.edu/newscenter/superhydrophobic-metals...