I can say that speaking as someone working on a high-volume eCommerce website, you would not even be allowed to checkout without JS enabled.
The fraud is just insane. With JS anti-fraud tech you can eliminate a significant majority of fraud.
The fraud is just insane. With JS anti-fraud tech you can eliminate a significant majority of fraud.
Everywhere I've worked doesn't really care about the frontend (it is merely the first line of defense); everything is validated and authorized on the backend.
In large scale ecommerce, fraudulent transactions in the 5 figures is so common it's not even notable. So using JS to reduce this even by half saves the company literally millions of dollars.