Yup, I know how to do it from within the app. But as a developer I live within GitHub, and so get notified about new releases/etc there as part of my daily workflow. Having access to the link from the release notes/changelog from the releases page is sort of best practice in that regard.
Yet by nature of it being a public facing backend, there are going to be technically minded users who will benefit from the change. And for the effort of adding just a single static link to the ‘announcements’ category in the generated release notes when a new version is release, it would address this category of users, while requiring almost zero dev/etc on the Obsidian team.