burningfeelings GrapheneOS devs are not keen to enter into the enterprise app support
GrapheneOS developers have never said this, please do not make assumptions. There are zero plans to intentionally remove or block enterprise usage. GrapheneOS is permissively licenced to specifically allow our patches and contributions to be upstreamed, enterprise/corporate usage, etc.
There are various issues on the issue tracker offering support for MDM usage, including Intune, and I even created a patch to support installing sandboxed Google Play in an MDM-provided work profile, such as VMware Intelligent Hub (Airwatch) using Apps (provided global app installation is not disabled), in situations where you can't add your own apps to the work profile: https://github.com/GrapheneOS/platform_frameworks_base/commit/3613c0860815c998d924f09fe5f8bdb1e1a6177f
GrapheneOS has not intentionally stripped out any kind of support for MDM, Intune, work profiles, etc. Most of these things simply rely on privileged Google Play being integrated into the OS which GrapheneOS has removed for obvious reasons.