

Lemmy was originally founded by political extremists who wantted a space for their politics (tankies.) Its since grown past that, but that inflence is still present in many ways, most prominently in the influences of .ml. On top of this, politics is something inflammatory (and thus engaging) that affects everyone. Because its both engaging and broad-appeal, its going to be something everyone talks about. On the other hand, many niches, aside from being niche are often less inherently engaging (IE talking about a finished TV show). This makes it very hard to get the critical mass needed for a community to snowball into relevance. This means that (effectively) all you’re left with is the political communities and a couple niches that are broad appeal enough and have active enough users to be stable.
Its not inherently a bad idea, but you need to keep in mind that is a crutch and not a cure. Substances won’t solve your problems, and shouldn’t be your sole, chosen treatment.
That said, just as crutches can help you survive and are often healthier overall than bedrest, so too can substances help. For example, if you have severe, chronic depression, and can’t afford medication, while weed won’t help (and may make it slightly worse overall), it might help you remain functional durring depressive episodes. Its no medication, but if its keeps you alive long enough to keep working towards a long-term solution, its worth it.