Both should be welcome. Especially with the current state of Lemmy (low user base), over moderation can be a real thing.
More narrowly tailored communities have narrower appeal and Q&A communities function off of their number of users.
This is one reason why on Reddit r/AskReddit (44M) has more users than r/AskMen (5.8M). And why r/AskMen has more users than r/AskMenOverThirty (458K).
One aspect I think Lemmy lacks is the ability for some contained discussion. To much leads to feed back loops but not enough discourages niche communities.
This is something Reddit’s scale does well. Reddit communities will have most of their posts never make it to the 5th page of All. There will still be break out posts but most likely the only people reading your post are those in your community.
With the current size of most niche lemmy communities you are posting to thise in your community as much as you’re posting to who ever is viewing All by new.
I think they meant that they dont attribute either brevity to the level of not conveying a point effectively or verbosity to the point of eroding interest as being particularly good means of communication.