BQ came to the opposite conclusion. Not that much of their content is available online, but this post at least touches on the topic. --> https://www.renehersecycles.com/myth-9-fork-blades-dont-flex/
Now you can of course come up with a mental exercise where you build a very flexy straight leg fork and a very stiff curved leg fork. So there has to be some allowance to control the designs for comparison purposes if you want to tease out the differences that relate only to the straight vs. curved part of the design.