Real-debrid does filtering based on the torrent name. Media uploaded to usenet is already obfuscated and split into many tiny pieces, the location of which are stored in a .nzb file.

This means eweka can't filter downloads based on the title. Once media companies get a .nzb file, they can use copyright infringement notices to make usenet providers delete the files, but that does not work preemptively (like filtering based on torrent name).

No not all Debrid services are under the same jurisdiction. The reason this has been a topic lately is because most of these services have been hoisted out of France specifically. And the French are extremely strict when it comes to copyright and DMCA, to the extent that they actively hunt down the individuals hosting such services through their social media. One fine example of this here. .

So essentially just need to stay away from countries hosting their services through France as it's more likely to get shut down.

All over the world they're always under the same threat but it takes the dystopian government some time to invent a reason to shut them down