David Hogg can be "uncivil" towards opponents (see video). Why then should those who are "uncivil" towards him have their careers destroyed?

First an example of what Hogg apparently views as "civil discourse," using profanity and wild accusations to attack people who disagree with him:

https://youtu.be/-k7IKnzZeK0?t=216

This is important because it informs how people are allowed by the culture to respond to and disagree with what he says. He's allowed to sling mud, but no one else can retaliate or criticize him.

First, Hogg insinuates that he was rejected by several colleges because they "don't want to support him in changing the world." This ignores the fact that college applications take a long time to process, that more than likely he applied before the shooting and CERTAINLY before his current cultural prominence, so the decision to reject him was based on his grades, not his activism:

https://youtu.be/IqYlxualEgs?t=99

Critics point this out:

https://i2.wp.com/thepoliticalinsider.com/content/...

He reacts badly to this, demanding that either she or her advertisers be put out of business for daring to make the criticism:

http://cdn01.dailycaller.com/wp-content/uploads/20...

She apologizes (stupid move, IMO):

https://www.dailydot.com/wp-content/uploads/2018/0...

He rejects her apology, demanding a denouncement of "mudslinging at children", despite all the mud he has slung.

https://i.imgur.com/usXIZ9V.png

Why the double standard?