Here is a guide from the GNU website: https://www.gnu.org/licenses/gpl-howto.en.html

The instance is down. Every instance copies the posts from the other instances when at least one person subscribes to it. So what you see is just the remnants of the instance on your instance.

Du hast recht aber bei Digital ist der Unterschied normalereise zwischen geht und geht nicht. Ein analoges Audiokabel kann die Qualität verändern indem es Frequenzen filtert.

I never heard of Detroit style but I think it looks very similar to what I would call a baking tray pizza (Blechpizza) in Germany.

PrusaSlicer. I like the settings better. It's a good slicer.

It is still on Meta servers.

Nope. Bash (at least by default on Ubuntu) doesn't have case insensitive tab completion.

Well someone has to pay for the server, the power, the storage, the network, etc. So if you find something free it will be very limited.

I don't think an app will help you. One of the core concepts you have to learn is, how to identify a problem, deconstruct it into it's core components and write it in way the pc understands.

Whenever I see someone learning programming there is usually a moment when it clicks and it suddenly gets easier.

You have to learn the basic concepts of a programming language. Usually there are a lot of concepts that are similar in different languages but also a lot of details that are not.

I learned programming by reading and experimenting with code but that was the hard way. In your case I'd try to find a course that you like and use that. That is your starting point. When you a through you have to find your own projects to really leant how to program.

This is my favorite comic

Did you feel better after doing it?

If that is a solution you'd need to change the ActivityPub specification. You are more than welcome to submit your idea.

Also, there’s way too much trust in instances. Like, one person could easily make a post on lemmy.world, go on their personal instance, and just give themselves, say, 2000 upvotes.

I'd first have to create 2000 users, then I'd have to send 2000 upvotes. And then I'd get blocked by all instances.

Instances should have their own settings on what instances are allowed to keep a local copy.

This is also not compatible with the ActivityPub spec but even if it were you'd win nothing because as soon as you fetch the post it is still on the server.