> I also don’t understand this argument because you can just take 1 hit and be done.
The increased THC concentration compared to other psychoactive chemicals seems to produce more paranoia and other negative effects in some people, so it's not just a strength issue. The effect is different if the proportion of THC to CBD increases.
It's also easier to get more THC than you intended if you're consuming stronger stuff.
> Should liquor be outlawed because it is stronger than beer?
If spirits are legal then people should at least have the choice of drinking beer.