view only link for everyone says Join Folder, Copy to Dropbox, Download. I DON'T want Join Folder.

Thanks authorsjuliusincestus  for sharing more about your use case.  Sharing a view only folder link would only permit a recipient to view content - not edit anything. 

However, I can understand for your situation, you want to keep the experience to a one way flow of content delivery to recipients.  I'm assuming these are customers or prospects of some sort, so you also want the experience to look polished and professional.  You need them to be able to download, but don't want to be bothered with "requests for access".  Nor to confuse your intended recipients with multiple options for viewing your content.  

If that all sounds right, then I can see why the addition of the "Join Folder" option that came with our introduction of content-based folder links doesn't hit the mark for you.  But there are some alternative methods that I think might work better for you.

1. Are you familiar with Dropbox Transfer?  It may actually suit your purposes better since its intended as a way to deliver work to clients.  It even allows for custom logos for a professional look.  You can use it to send folders or files with a link.
2. If you are only sharing a single file (your ebook), a shared link to the file would only allow view access and recipients would be able to download from a web preview without an account.  There is no "join" option.
3. A forced download would also be an option.  This requires modifying the URL manually - see details here - and recipients wouldn't be taken to a web preview at all.  Instead visiting the link would initiate a download.