Hopefully the next exodus, Lemmy will have a better way to boost visibility of niche communities in active/hot timelines. Reddit was good at doing this, not sure how they did it. Right now it's really hard to grow small communties unless you explicitly keep checking on them. So it is a problem, but there is a solution that hopefully we'll figure out soon. Also we have pretty mature phone apps now, but the desktop site is pretty lacking unless you use one of those alternative front ends.