However, it's quite obvious that the only seatbelt set that functionally "works" is the third set with male and female ends. The other two sets are useless; you can only "click" with the third set.
As this blog notes,
If KLM equipped its aircraft with set number one or number two, its entire fleet would be grounded for safety reasons. And if even one passenger’s seat was outfitted with double male or double female ends, the plane would not even be allowed to pull away from the gate because of the safety hazard presented to that one passenger.
Only the set of “complementary” seat belts protects passengers from harm. The others have no real value. In fact, they invite danger.
One of the best responses to the airline’s tweet came from Rick Canton: “Fly Royal Dutch Airlines, where your only chance of surviving a crash is buckling up the heterosexual way.”
..... In this way, the KLM ad offers a perfect explanation of why same-sex “marriage” is an impossible notion.
Truth is still evident even when we try to hide it.