I like JavaScript-light websites just as much as anyone (my own website works on the same principle). However, I do wonder how much of the increased traffic has to do with AI agents that now have an easier time working with the more standard web forms. My own contact form had a bunch of bots quoting Scorpion lyrics before I added a rate limiter.
None of the increased traffic was from AI agents. FTA: 'The results? When we launched, the number of people completing the form doubled.'
All completions were real people. It's a government website.