Feddit.org is only majority German speaking (it's actually run by an Austrian foundation) because people from feddit.de needed a new home. It is not per se only for German communities, for example /c/europe@feddit.org is in English.
Since they run their site through Clownflare, it looks like they are hosted in the US, but their server is actually in Finland (at least as far as I know, might have changed recently).
I think one reason has to do with digital sovereignty. Especially people in Europe are not happy with the dominance of US based social media sites and thus are more likely to invest time and effort into local alternatives. They are also more likely to be concerned about the near total lack of legal privacy protections in the US.
Small correction: slrpnk.net is hosted in Portugal and not Germany, but we do have a German speaking admin and our founder is Italian.
If you connect via 10gbit PCIe extension cards it is often a question of how many PCIe channels the CPU has and if the mainboard you are using has these connected directly to the CPU or needs to pass them through the mainboard chipset which is much slower.
Pict-rs that is used by Lemmy to store images already supports S3 type storage, so in theory it should work with Jortage, but I don't think anybody has tested that yet. The people behind Feddit.org might have experimented with it as they expressed interest a while back.
Have you considered providing something like this: https://jortage.com/ and maybe contribute to their efforts to develop a specific API for that? Source code is here: https://github.com/jortage
Die Franzosen bitten schon länger darum das Deutschland sich am Erhalt der Atomwaffen als Teil der europäischen Verteidigungsstrategie beteiligt. Das lehnt die CDU seit Jahrzehnten strikt ab, daher ist das wohl wirklich nur Populismus.
There are external GPU cases that might work with your laptop, but at least on older models these were relatively bandwidth limited which doesn't matter that much for gaming, but I guess it might cause more problems with AI workloads? On the other hand, maybe not if the model fits completely into the vRAM of the m40?
SimpleX is not suitable for larger group chats.
XMPP has a few quite popular privacy related public channels: https://search.jabber.network/search?q=privacy
(For those unaware: xmpp participant counts are actively connected users, not like Matrix or Discord that counts who ever joined the room years ago and never came back).
What makes you think so? It seems rather openly "leftist" at least for US standards.