Storage space is one issue. Bandwidth (how many TB/mo goes out the server) is another. And for any "serious" use case transcoding would also be important (so you can keep the other two down for everyone except Apple users who are stubborn to adopt VP9/AV1, and to provide multiple quality options), which unlike the other two requires powerful hardware most instances do not have.
It uses WebTorrent for distribution between viewers watching at the same time which can temporarily help with the load on popular videos, but there still needs to be at least one source instance that's sharing the video "regularly" (for unpopular or old stuff), which ends up having the same bandwidth issues you'd get with any other video platform.
alongside the others mentioned here, lemdro.id exists for Android-related stuff and lemmyrs.org exists for Rust stuff (but seems to be running an old version of Lemmy, so YMMV)
Light mode only "clicked" for me when I set my monitor's brightness all the way down. If you're getting "flashbanged" turn that brightness down. It helps (or maybe my monitor is just really fucking bright)
Except Discord which somehow manages to have the worst light theme ever created by mankind. I have no idea how anyone can use light mode without going mad. Everything else's fine.
Well, the "how" is technically simple. You paste the URL to the search box and you hit subscribe. You can do that right now with:
Lemmy communities
Kbin communities
PeerTube channels
Mayyyyybe a.gup.pe / chirp.social groups???? idk how well those would work
Lemmy itself only let you subscribe to ActivityPub Group actors though, so it's quite restrictive in that regard. kbin adds user follows and microblogging into the mix, but you can't do those through Lemmy yet (or perhaps ever).
However, the real "problem" is presentation. While you can, say, follow a Lemmy group from Mastodon. Mastodon is not intended for groups so it kinda breaks and ends up spamming your home timeline with all the posts and comments. Other implementations such as Akkoma or Misskey or Calckey (pending rename) might end up interacting better (because Mastodon will try to convert everything it gets into Notes in a "lossy" fashion).
While the protocol does allow you the freedom to interact between services, you will not get the best experience if you're not on a "similar enough" service. Although that does not stop you from following a PixelFed account from Misskey, or a Mastodon user accidentally finding their way into the Lemmy comments section. (You can tell because they'll be the only comments that end up tagging people when replying)
You have to actually toggle to see it but IMO it massively improves how scrolling feels.
There are a few more scrolling-related options out there on the net if there's a particular "feel" you want to go for. https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js provides a couple you can try out, and most of these custom scrolling options use msdPhysics as a baseline.
.ml unblocked the kbinBot UA a couple days ago so as new posts and comments are made it should be syncing up. there are still a few instances out there that seem to not federate as well (in particular beehaw doesn't seem to be federating beyond community discovery) but i believe that's just some reverse proxy misconfiguration (the lemmy-ansible nginx config had some federation related fixes with the release of 0.18.1 they may not have applied) rather than anything intentional
Again - I have no idea how well it's hardware support is. I assume 3d accel and whatnot would be fine because it's widely used, but dunno if anyone tried running ROCm on it.
Just let some bees loose on your system for a while and they'll sort that out.
Also depending on how good your CPU is btrfs compression would also save a fair bit. AFAIK shared libraries are pretty well compressible.
I wonder how well it integrates with hardware. Arch with the pacman packages has been the only distro where I could get ROCm working reliably. I'd love to make a "ROCm container" and dump all that mess into it's own sandbox.
In fact, the thing I really want is more of a "Qubes but not for security tryhards" (aka I can actually use Wayland AND game on it) where everything gets it's own container mainly for organizational purposes, but something like this sounds like a fair compromise.
.ml still seems to have the user-agent block in place but plenty of other Lemmy instances that didn't federate before seem to be federating. or at least federating enough that searching picks up their communities.
last time i tried .world was the only instance that federated with kbin properly