

You won’t find a lot of popular, unencrypted content these days on usenet. It’s all encrypted and obfuscated now to avoid the bots
That’s not been my experience at all. Pretty much everything I’ve looked for has been available and I rarely come across encrypted files. I do regularly have to try 2 or 3 nzbs before I find a complete one, but I almost always find one.
No, but that’s just the nature of NZB file sharing. The individual articles aren’t typically tagged/named with the actual file names, that info is pulled from the NZB and the de-compressed + stitched together articles.
I’m not using any special indexers, just open public registration ones. The NZBs aren’t hard to find, for me or for IP claimants.