Similarly, CrossRef requires that DOIs link to landing pages and not the content file directly.
This is their rationale: https://www.crossref.org/documentation/member-setup/creating-a-landing-page/

Sarah Swanz
School of Information, MSc ’18
University of Michigan, Ann Arbor
On Feb 15, 2024 at 2:08 PM -0600, Eric Lease Morgan <[log in to unmask]>, wrote:
> Why do we -- librarians -- point people to splash/landing pages instead of the actual content?
>
> We digitize stuff. We describe it. We put it on the Web. And then we point people to the descriptions instead of the real things. I understand the need/desire to make people aware of the metadata, but the metadata does not really give a link to the real thing. Instead, I must look over a splash/landing page, identify the download link, and click. Such is fine for a single one-off item, but when there are dozens (if not hundreds) of desirable items, then I am inhibited from click/save, click/save, click/save, etc.
>
> --
> Eric Morgan <[log in to unmask]>