2021 Taliban Offensive in Afghanistan - Kabul vs. Saigon comparison

I see that helicopter designs haven't changed much

No see the argument is that we won Vietnam and it was only "lost" because the US congress refused to answer the call of South Vietnam when the North Broke the treaty leaving them to be taken over forcing our evacuation.

In this scenario its the US that broke its word via Biden ignoring the May deadline in favor of cheap political points via 9/11 optics.