Ape index or wing span is a better indicator for bar width than height or torso length. Someone may have a long torso, but the arms of a penguin. Generally speaking, taller people will have a greater ape index so wider bars make more sense. At 6.2" with ape index of +4in. my bars are 800mm but had 785mm before and can't really notice a big difference except in situations where you have to muscle the bike around , then narrower is better.
Down to 780 and I be just had two days at a local bike park. If anything my control feels better and I’ve not once wondered if my handlebars were too wide, so I’m counting that as a win.