I had professional mid foot orthotics custom made 25 years ago they are hard not padded and still use them today. I also work to strengthen my feet. I use to have over pronation. It was a really bad, was a huge difference after getting my custom orthotics. As a USPS letter carrier, I was walking 15 to 20 miles a day, so healthy feet were a challenge.
Would have liked to know what he had to say about strengthening the arches....After rewinding about 10 times I realized he had nothing else to say about strengthening. Just saw the arch support over & over. Waste of my time....