🎨 Misc. cleanup, comments

Marlin/src/module/stepper.cpp

@@ -2346,13 +2346,9 @@ uint32_t Stepper::block_phase_isr() {
         #endif
       #endif // LASER_POWER_INLINE
 
-      // At this point, we must ensure the movement about to execute isn't
-      // trying to force the head against a limit switch. If using interrupt-
-      // driven change detection, and already against a limit then no call to
-      // the endstop_triggered method will be done and the movement will be
-      // done against the endstop. So, check the limits here: If the movement
-      // is against the limits, the block will be marked as to be killed, and
-      // on the next call to this ISR, will be discarded.
+      // If the endstop is already pressed, endstop interrupts won't invoke
+      // endstop_triggered and the move will grind. So check here for a
+      // triggered endstop, which marks the block for discard on the next ISR.
       endstops.update();
 
       #if ENABLED(Z_LATE_ENABLE)