I'm sorry, this is just false. Gab is white supremacist Twitter. Its founder was kicked out of YC for harassing minorities. Its (verified) Twitter account has been repeatedly screenshot promoting white supremacist and anti-Semitic messages. Virtually all of Gab's users are either white supremacists or right-wing conspiracy theorists --- even the account that posts inspirational landscape photos turns out to be a white supremacist on Gab.

Gab very much wants you to believe they're just a Twitter alternative with no intrinsic slant (though they've been overt about being a home for nationalists in their own materials). But that's just a grift.