As mentioned in the article "Mob lynching isn’t a new phenomenon in India. According to some reports, there were more than 2,000 lynchings in India between 2000 and 2012 — well before WhatsApp was around."
I agree that WhatsApp has the potential to exacerbate such issues.
I agree with you. Even though BitBucket allowed private repositories for free, their poor usability and interface kept users away. GitHub is not just Git. GitHub would have become popular due to its ease of use and cool user interface even if it was based on Mercurial (hg) or, may be, even Darcs. Bitbucket's latest design is good but has arrived later than expected.
I agree that WhatsApp has the potential to exacerbate such issues.