This feature using MDM should be able to run rootless jailbreaks that are installed inside /preboot/var/jb-......

Look at the example of running jailbreakd and iDownload at boot using mdm bug to do untethered action on the device: https://github.com/haxi0/BBDUntether

So it would be nice to have an untethered jailbreak (for people who wants that jailbreak) using an MDC app like Cowabunga

You just need to find out to develop Cowabunga clone to sideload as com.apple.TestFlight bundleId and using the demo of the BBDUntether project and implement other features from BBDUntether so that when the toggle for the feature "Untether Rootless JB" is turned on from original Cowabunga, it will sideload com.apple.TestFlight Cowabunga clone from original Cowabunga that have built-in bootstrap detector and mount inside iDownload shell when the shell is started

If you cannot do that alone, you can contact other jailbreak developers who are interested in creating untether jailbreaks in this hard age of jailbreaking so we can see sooner or later this feature that will be so useful for us. Not to mention that up to iOS 15 that are supported with TrollStore will all devices work and be supported no matter about arm64e/arm64 compatibility

Happy coding! : )