Fabric is superior in comfort and cost.
But if you absolutely want leather for looks/stain resistance, there historically hasn't been much of a choice. Plastic fake leather alternatives degrade pretty badly under UV light, causing cracking/flaking after just a few years. As anyone who has owned a fake leather chair or jacket would have noticed. But the expected lifetime of a car interior is measured in decades.
The article mentions some startup innovating on new synthetic hemp-based fake leather, it'll be interesting to see if they can match the long-term durability of genuine leather. Otherwise it'll be a shame if those interiors fall apart in 5-10 years, reupholstering an entire car is not a small job.