FreeBSD-set-src package is marked as vital?

From: <polyduekes_at_proton.me>
Date: Thu, 16 Oct 2025 18:20:23 UTC
i noticed that i have FreeBSD-src and FreeBSD-src-sys installed even though i never installed them, when i tried to remove them with pkg remove FreeBSD-src-sys i got

pkg remove FreeBSD-src-sys-15.0.b1.20251015211959
Cannot solve problem using SAT solver, trying another plan
Cannot solve problem using SAT solver, trying another plan
Checking integrity... done (0 conflicting)
1 packages requested for removal: 0 locked, 1 missing

the "1 missing" really confused me, if it wasn't for a helpful guy from the community i wouldn't have figured out that the issue was that "FreeBSD-set-src" is marked as vital, so i think it would really helpful if it is possible that pkg can tell that instead of saying "1 missing"

another thing that confuses me is whether or not FreeBSD-set-src is marked as vital on purpose?

Thanks, Polyduekes