You’re not dumb you just haven’t needed that use case before.
Here’s an example of the last time JDownloader saved me. There was a website where people were posting archives of old skateboard videos. There were hundreds of links across dozens of pages in a forum. All links to sites like mega.
I was able to view all pages in one document and extracted all of the hundreds of links and put them in JDownloader. Over the course of the next several weeks JDownloader was able to manage those downloads without clogging my bandwidth. If a download failed it would notify me and I could retry it.