Your points are valid, but turns out that the practice is showing different results:
the original asker is not here to get the answer.
I’m working on two-way communication. Responses to a mirrored comment here will trigger a notification to the original reddit poster and a comment to the reddit thread linking to the lemmy conversation.
It’s frustrating to put out a well thought out answer then realize that the person who asked will never see it.
This is not what is happening at the selfhosted communities. Turns out that a lot of the initial posts are enough to foster a discussion between people on Lemmy already.