This fact is not disputed by anyone. You can read the US reports on the resettlement here [1]. Wiki being Wiki sites a YouTube video from the Navy, but concludes the same [2]:
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"The Vietnam War ended on April 30, 1975, with the fall of Saigon to the People's Army of Vietnam and the subsequent evacuation of more than 130,000 Vietnamese closely associated with the United States or the former government of South Vietnam...
After the Saigon evacuation, the number of Vietnamese leaving their country remained relatively small until mid-1978. A number of factors contributed to the refugee crisis, including economic hardship and wars in Vietnam, China, and Cambodia. In addition, up to 300,000 people, especially those associated with the former government and military of South Vietnam, were sent to re-education camps, where many endured torture, starvation, and disease while being forced to perform hard labor."
You’re just taking literal communist propaganda at face value with takes like that. I can’t believe I thought you were arguing in good faith.