> It makes me wonder: how do people get so sold on a thing that they'll go online and fight about it, even when they lack facts or often even basic understanding?

I feel like this can be applied to anything.

I had a manager take one SAFe for Leaders class then came back wanting to implement it. They had no previous AGILE classes or experience. And the Enterprise Agile Office was saying DON'T USE SAFe!!

But they had one class and that was the only way they would agree to structure their group.