The thread discussed the question of why people tend to choose proprietary microblogging platfroms (i.e. Bluesky or Threads) over the free and open source microblogging platform, Mastodon.
More people would be great, especially for niche communities.
I don't see #2 as that big of a problem. Do we want people who won't expend any effort to join? I guess everyone sees the line between accessible and "dumbed down" a little bit differently. I'm not saying #2 is great. I recognize it is an obstacle. But it's also kind of the point of Lemmy...in the sense that this is not a monolithic corporate one-size-fits-all kind of endeavor. In a way, the obstacle also serves as a teaching moment, if you will, of how this thing even works.
Item 4 seems a bit chicken-and-egg to me. But my guess is, not being able to find those communities isn't nearly as big of a problem as those communities not having any content / participants. I can see the argument that one causes the other, but I haven't found it very challenging to find those empty places. It's just not much fun to hang out there by yourself.
I'm part of the admin team for a group on Facebook dedicated to a niche wargame. Anyone can apply to join but there is an entry question. The question itself tells the user where to find the answer (it's both on Wikipedia and in the rules of the group!). We still get people that either don't answer or put something like "I can't be bothered looking it up".
Those people do not get to join.
I'm firmly of the belief that if people are working to maintain a space for you then it's on you to put a bare minimum of effort in to be allowed to use that space. We curate the group to keep content on topic and try to keep it a nice place to be.
The nuance is of course in what level of gatekeeping is healthy.