Another loophole is delta8-THC[1]. d8-THC is derived from CBD[2]. It _does_ occur naturally in hemp flower, however not in any significant amount (yet). delta8 gets you high, without the anxiety. Typically it's consumed mixed with cannabis terpenes[3] in a vape pen, or consumed orally. With so much CBD flower production happening and the pricing race to the bottom, more and more d8 vendors are popping up. The arbitrarily set d9-THC limit isn't preventing anyone from getting high, it's only hurting growers that accidentally produce "hot" flower. You can find discussion about d8 in those subreddits you mentioned as well.