Can the Queen Elizabeth-class carriers be considered untouchable?
Short answerNo. Nothing at that level of warfare is untouchable, and every carrier depends on a capable escort and task-group structure.
NotesA carrier is powerful without being invulnerable. It fights as part of a formation whose submarines, destroyers, frigates, aircraft, and support ships detect and absorb different threats. Treating the hull alone as the defensive unit misunderstands carrier operations.