Compact state licensure still requires you pay for other state licenses and go through their process, it’s just a lot faster since the states agree that your background check and data don’t need to be reevaluated from scratch. A doc would have to pay for every single state license in order to work nationally. But the VA and IHS already accept docs with any state license to work in their system at any site, basically creating a “national” license. It works just fine. It doesn’t increase risk of fraud, if someone is a fraudster they wouldn’t be able to practice anywhere after losing a national license.
There’s high less content in a number of “regular” supplements , too. Without third party testing it’s legal to sell anything in a capsule and call it a supplement, at least in the usa