Legality of RC’s

[Lacognac69]

What i do not understand is how rc's are legal. I know that they could technically claim analog, but still, they are pretty much legal to possess. I personally haven't tried any of these but I certainly plan to in the near future. What i'm curious about is why they make one thing illegal, but something very very similar or something thats an even stronger version of an illegal drug is legal( such as DMT, and 5-meoDMT). It seems very strange to me, not that i'm complaining at all. It seems that they tend to move quicker towards making the club drugs illegal, compared to the ones that just make you trip balls.