> These properties only exist if the ChatGPT React application has fully rendered and hydrated. A headless browser that loads the HTML but doesn't execute the JavaScript bundle won't have them. A bot framework that stubs out browser APIs but doesn't actually run React won't have them.

> This is bot detection at the application layer, not the browser layer.

I kind of just assumed that all sophisticated bot-detectors and adblock-detectors do this? Is there something revealing about the finding that ChatGPT/CloudFlare's bot detector triggers on "javascript didn't execute"?