An entirely separate thing that disturbs is exemplified in that video, and of course too many times among educated people
on this board and elsewhere. People need to somehow force themselves to understand the nature of a cult.
Does everyone know what is in this photo? These are ordinary people, including families with children and tiny babies,
who because their cult leader told them to do it, all gave themselves and those children poison. By some estimates, more than 500,000 Americans are dead because they rejected the facts about Covid-19 due to the lies and distortions of Trump.
And you are looking for "reasons" for these things? Humans are subject to this kind of cult infatuation behavior and its results, and you are never going to adequately sort it out into various social constructs. It is beyond that. I have written about what happened to the Republican Party over the last 70 years or so, but that is not what this topic and the OP video are actually about.