Another earlier study with the same conclusion regarding tangential and radial forces related to power and efficiency.
https://www.researchgate.net/figure/...fig4_245480810
They all show the same thing i.e. that tangential pedal forces are not very large away from the 90 degree position and that significant radial forces are an integral part of the pedal stroke and attempting to reduce them is not a good idea - even if it sounds intuitive.