Counterpoint from my personal opinion: instance doesn't matter, don't assume people have certain views based on that, try to avoid stereotyping or being a dick to anyone, spread acceptance and love to everyone and if someone's a dick to you just block them or ignore and move on. As with Reddit, the strength is in niche communities, and while Lemmy is still obviously way smaller, there are still some great niche communities here if you look for them - just try not to be put off if it turns out to be basically just one person keeping a community alive by posting regularly. Engage! I've actually posted and commented way more here than I ever did on Reddit cos it feels like people actually reply and pay attention to stuff here and the mobile apps are great (boost, sync, etc)