As already demonstrated, Bose was able to sell what was effectively a hearing aid in this new category, but without making any claims about assisting with hearing loss.
I guess what you're suggesting is that manufacturers should be able to make any claims they please with the FDA being relegated to a position of endorsing those claims.
Nothing that has happened in the past few years has given me any confidence that such a system would work (see: Ivermectin, Hydroxychloroquine, Bleach, intravenous UV light, Chelation, et al.).