diff --git a/scripts/playwright-with-display.sh b/scripts/playwright-with-display.sh
index a6f4324e..d5dc53d1 100755
--- a/scripts/playwright-with-display.sh
+++ b/scripts/playwright-with-display.sh
@@ -34,8 +34,16 @@ set -euo pipefail
 if [ "$(uname -s)" = "Linux" ]; then
   # A missing openbox used to be silent: `openbox &` below printed
   # "command not found" into the run's noise and the suite carried on with no
-  # window manager, so the maximize-dependent specs measured pre-maximize
-  # geometry and PASSED. A false green is worse than no run, so refuse.
+  # window manager at all. Running a GUI suite in that state should be a
+  # decision, not an accident, so refuse.
+  #
+  # Measured, and it qualifies the rationale in the header comment: neither
+  # named spec actually discriminates on window-manager presence on Linux x64.
+  # window-targeting.spec.ts passes 9/9 both with openbox and under bare Xvfb,
+  # including "maximize is non-toggling" — so it is a pin, not evidence that
+  # maximize is honored. page-layout.spec.ts fails the same 2 tests either way,
+  # for an unrelated waitOverlayReady timeout. The window-manager requirement is
+  # therefore unconfirmed by any test currently in the suite.
   if ! command -v openbox >/dev/null 2>&1; then
     if [ "${PEEK_ALLOW_NO_WM:-}" = "1" ]; then
       echo "playwright-with-display: openbox missing; PEEK_ALLOW_NO_WM=1 set — running WITHOUT a window manager." >&2