This is very true. How much do you share before boring people?
So I propose the following. Instead of using the simple heuristic of talking half the time which will work with nearly everyone practically always (modulo some edge cases when people have literally no strong opinions about anything), use the wealth of your experience as a human being to establish when and when not to promote complex human social interaction, additionally taking into account contextual and mitigating factors, while simultaneously ensuring that all parties are satisfied with the level and intensity of discourse instead of taking some random Internet person's sound bite advice.