This still works! I got a cloudflare error on neal.fun's Size of Life page. You wait around a bit for the "Stuck? Troubleshoot" link to appear, and can submit feedback that way. The more people submit feedback, the more likely these checks will succeed.
Also if you keep dragging around the cursor with the joystick and staying on the page, while holding A, making circles and stuff, it will also eventually lets you through to the target page. I think it is more about making the inputs "seem human" since otherwise a lack of mouse input makes it seem like a robot is on the page.