People who use terms like ‘fascist regime’ don’t get consideration. That’s like someone on the other side referring to ‘unprincipled savages’.
Name calling just doesn’t win. Maybe it makes the name caller feel better, but it loses the audience.
But to one of your points: in some cases, it's not name-calling, but an objective assessment. And "fascist regime" and "collaboration" have historical meaning. I suggest that people of integrity would do well to consider the connotations. Especially at IBM, which infamously was a collaborator with one of the worst fascist regimes. "Never again" should still be in the minds of every executive and board member.