Unfortunately since there are no true US manufactures, only Chinese they probably never concerned themselves with the FDA.
In reality some of the larger companies like njoy are the ones that have the most at risk in the US and should have been on the ball as they are the ones marketing the products to the US without going through proper channels. You would think with the amount of money that was needed to start njoy they would have consulted with some attorneys. Maybe they did?
Who knows, but I just wish people would stop making these claims about being safe and healthy! Basically these suppliers are spitting on the FDA, when making claims like this and ruining it for everyone else.
I think that logically they may think politicizing e-cigarettes is a bit ridiculous given that analogs are legal.