I hope you realize that you are exaggerating. Out of all of those, the only one that an employer has ever had any interest in was my GitHub account and I have gotten software dev jobs before I even had one
Of course i'm exaggerating, I've worked in software for 10 years and never had any of those. Until about 3 months ago I didn't have a twitter account. I've never been out of work.
BUT, the amount of people that look at me funny because I didn't, and the article that i linked to just reinforces that.
