They mean more "bored of life" than "bored in the moment".

Used habitually, it can be a pacifying kind of drug. You're unhappy with things, so you get stoned to get a little escape. If you didn't have the out of that little escape, you might be more inclined to make choices and put in the work to make lasting changes.

On the other side, shrooms makes you uncomfortably confront the shit that you don't like about yourself and neural pathways get a chance to reroute, so you can kinda give yourself the kick in your ass you need to see the problem and make changes.