It would be nice to also have it on F-Droid.
I haven't used Stack Overflow in a while so I forgot about most of those features, and as long as it also uses ActivityPub it doesn't really matter that much if it is a different platform. I think some of those features could even be useful on Lemmy (tagging posts would be nice and maybe community-editable posts could be a thing that communities could choose to enable).
Lemmy could be that, just have programming (and other) Q&A communities here.
I tried all three and I am liking ThinkSocial (I usually read the whole contents of posts and some of the comments so it works pretty well for me). Perchance you know of any desktop (web) clients that have a paginated timeline?
I wanted to implement the pics into the post via

But it was not working for the upscayl version, sorry.
I just had to copy the link that the Download original image
button pointed to and remove the ?dl=1
from the end, and that gave me this URL which points to the image and can be embedded in the post.
lndex
I have known about PWAs for a while, and it always has annoyed me just how many apps I have that could be PWAs instead. I think apps can be tracked to a greater degree than websites, so, at least for closed-source stuff made by companies, native apps give more data they can use and sell.
If you start to type @username@server in the default Lemmy web app it will give a list of users that roughly match what you typed, and if you choose one it will just add a link, so I think that that is actually the correct way to do it.
Does OwnCast federate with PeerTube? I'm not quite sure how these Fediverse video platforms work, so I'm not sure if it would be possible.