How exactly do I deactivate the “All Feed” to not pollute my server and avoid distractions to the users, but let them comment on external posts
How would they ever find the external posts to comment on in the first place?
I'll say this: a lot of discussion seems to take place on Matrix chat that doesn't make it into GitHub code comments as to why specific changes are made.
It used to be you could see the actual content of deleted comments and it was at the discretion of the client to show or not show them. The newcomers from Reddit (June) seemed to not like that people could read content of deleted comments, so I think changes were made for that reason.
With federation, it really isn't reasonable to expect content copies to all be deleted. So it's a complex issue.
An Instance is just another word for 'server' in lemmy terminology. HDTV is a classic form of media that doesn't involve TCP/IP to watch films and other video content.
If everyone was spread out onto different instances
Each instance with an owner/operator making rules... that the average social media user walks in, orders a drink, and starts smoking without any concern that neither one may be allowed. People can be loyal to their media outlets even when it is beyond obvious they are bad. People raised on storybooks that endorse bad behaviors and values, HDTV networks, and social media too. Audience desire to "react comment" to images and not actually read what others have commented - nor learn about the venue operators and reasons for rules is pretty much the baseline experience in 2023.
Gentoo Linux agrees... the very root of the concept of "federated" comes from Usenet, which did not have a flat hashtag style group, a flat subreddit /r/name /c/name kbin magazine convention.
Could they be making posts or commenting on threads within my communities and I’m not even seeing them?
correct. When you view the list of posts in the community, that person's posts are not sent to you by lemmy_server. So they would fly under your moderation radar.
Matrix chat as the core developer hangout I find is similar
Same thing I've seen past 60 days with Lemmy. The major sites throwing massive hardware. "Wow, Lemmy now deletes a single post in 7 seconds".
This issue from 2 weeks ago was the one I was thinking of, it's worse: https://github.com/LemmyNet/lemmy/issues/3364
How do you spoiler an image in Lemmy markdown?
Yes, same issue, and I'm using lemmy-ui...
Lemmy's backend Top/Active/Hot are pretty primitive. I'm experimenting with some ways to weigh smaller less-popular communities... because +20 vote on meme topics is noise, but +20 on some focused community can be a big deal. hot_rank doesn't take that into account and just looks at published date and score. It's pretty tricky to get new things into the backend, so it may be a while.