How do you think recruiters will find you if you dont self promote. How do you think you will compete with others in the same org when you dont talk about your achievements. Even best products and services needs great marketing to suceed. When you can talk about F500 executives, you should know that the auto company valued most in the world is run by a twitter troll thriving on attention and promotion.

What you talk about is what I would prefer the world to be, but the reality is everything depends on marketing and especially marketing in social media.