I don’t even believe they took 0.5g of THC, that’s an insane amount. Unless they mean over a long period of time. The standard dose you can buy is 10mg.
It’s not insane for heavy users - they sell 1g brownies in dispensaries, these days. That being said, it’s neither cheap nor is there any debate of it being a medicine at that level. Dude’s just getting blasted every day and wondering why he’s tired
Is that actually 1g of pure THC, or is that like the weight of the extract or something? I can’t imagine the tolerance you would need, any normal person would be passed out for an entire day taking that.