I think he was trying to get them to sue him so he could reveal all his evidence in discovery. He knew they wouldn't though because what he is saying is true and the fact that they won't sue him proves it.
I read the comments from https://www.isitdownrightnow.com/gab.com.html and someone said :
@getongab on twitter says they are upgrading some hardware and will be back online soon...
Can't stand her smug, condescending smile throughout the interview.