Anything can fit into CVE.
"An app can bypass OS security system with certain setting enabled" is absolutely a valid CVE. We have countless examples every day of vendor apps bypassing OS security systems because they're allowed to do so.
"A device can bypass protective layers and cause soft tissue damage when thrown" is an absolutely fine CVE, too.
Whether it matters or is something that should be addressed, is the depends part. Here we're talking about CVE that's at risk of trying to address a feature.
You are forgetting the most important questions of security, without which the whole discussion becomes pointless:
Who is securing what, and from who?
CVEs seem much less like holy writ when they're aimed at protecting the device for commercial interests and from the device owner.
Apps being able to bypass a restriction put on them by the OS always matter.
Whether that means there's a _feature_ lacking there, is another question.
The OS provides restrictions and permissions so that the user can apply them to apps.
If the user chooses to free certain apps from restrictions, that should be their choice.
But if a piece of software overrides the users' choice, that certainly qualifies as a CVE.
This is an important distinction! The user must always have final say.
Whether an app breaks out of the sandbox and steals my vacation photos, or the OS sets new restrictions I can't remove, both are wrong.
Any piece of software has to act in service of the user, and ONLY the user. It must not do things or set restrictions without the users consent. No means no.