I would try a soil list, medium like perlite, coconut choir, sphagnum moss, peat, worm, castings, bat guano, some sort of acidifying agent. You might even want to add in some larger size stones that are aerated BBB like volcanic rock. You don’t necessarily want a growing medium that does not...
I agree it was sort of disrespectful the way it was said. That being said, cannabis is known to be acid, loving with target PH ranging anywhere from 6 to 7 depending on the phenotype. While one plant may be thriving at seven another will be dying. Adding acid to your soil quickly is the best way...