Many people committed suicides because of the way Gawker brought their private life in public. http://www.vox.com/2015/7/17/8992155/gawker-outing-gay-peopl...
As far as he being the investor in Facebook which uses your data to advertise to you - You actually agree to Facebook's terms when you sign up for it! In case of Gawker, it was someone who was feeding on destroying the private life of people in order to sell ads.
* Whether this sets a precedent or not - That is another question and can be resolved in future. That does not mean we should support a publication which is just gossiping about the private life of a person.