It takes me to this image when I click it: https://scx2.b-cdn.net/gfx/news/hires/2024/mathematicians-prove-p.jpg

The full thing shows if you click the image

Further, most of the times, it’s simply infeasible to test the data in-depth. We’re all humans with busy schedules and it is, unfortunately, not trivial to replicate experiments. If a reviewer feels more data is needed to support a claim, they can ask for a follow-up test or experiment, but it has to be within reason