Thing is, your foots arch is like a tension spring. It's job is to flatten on impact and spring back to propel. By putting a support underneath it, it cannot do it's job. Further more it will weaken through lack of use.
Now I understand that a hiking boot is like a support that a sports person would wear to increase athletic ability and provide safety eg I wouldn't begrudge an Olympic weightlifter for wearing a back support belt, but long term it may not be healthy. Also they wouldn't walk around every day wearing it.
So, for everyday wear, for most of your life you should be providing no support from your arches, but allowing them to flex and strengthen. As they strengthen they can raise, but arches do come in all different shapes and sizes so theres a lot of myth around fallen arches etc. We weren't born with lumps under our feet, so the idea that they need supporting is plain weird.
For performance on the day and safety, ok, wear arch supports to prevent injury from fatigue etc.
If you have a real medical issue, wear supports when needed, but endeavour to rehabilitate and strengthen your feet through exercises.