The italicized/underlined part below is difficult to read but apparently is meant to say that there's no difference between prefabricated versus custom-made orthotics-- both work.
Orthoses
Landorf et al. described a participant blinded randomized trial where they compared the response of 135 patients with plantar fasciitis to soft thin foam sham orthoses, prefabricated firm foam orthoses, and customized semi-rigid plastic orthoses over 3 months. While they were able to show statistically significant results for improved function with the prefabricated and customized orthoses as compared to the sham, Landorf et al. [9] were unable to show statistical significance for improvements in pain and concluded that both customized and prefabricated orthoses were efficacious for the treatment of plantar fasciitis.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2684947/