enjoying wine can be a hobby (wine connoisseur)

Just because alcoholics attempt to justify the fact that they want to get drunk whenever they want to by “tasting” wine doesn’t make it a hobby. It just makes it sad.

Now are you smoking your brownies or did you not read how we were specifically talking about smoking weed?

A hobby is considered to be a regular activity that is done for enjoyment … Participation in hobbies encourages acquiring substantial skills and knowledge in that area.

Source: Wikipedia

Now can you explain to me how smoking weed gives you substantial skills or knowledge?