[addicted]

The American culture may have worked in an in office environment where you have a lot of body language and non verbal cues to recognize that the "confrontational" behavior is actually supposed to lead to positive results. Besides, meeting in an office, and getting lunch with your colleagues nearly every working day and going for happy hour every week or so means that your relationship isn't defined by the confrontational experiences. How well will it work in a "remote first" environment where you rarely/never meet your colleagues outside the work environment and don't have non verbal cues, and your confrontational behavior simply make teammates uncomfortable isn't clear yet.

On the other hand, organizations are well aware of certain cultures being non confrontational, and have done a lot of work in actually helping them speak their mind without being confrontational. Pre-pandemic when I became a manager, my company provided me with a ton of training on structuring meetings and brainstorming sessions in a way that encourages everyone to participate.

There's a very good argument to be made that in a remote first environment the "confrontational" culture would lose out, whereas the "non-confrontational" culture, which can easily be worked around through a variety of management techniques, will work much better.