I think you're confusing the fact that people have repeatedly argued that Gab isn't white supremacist twitter with the notion that it has somehow been established that it isn't. But, of course, it is. Even Voat has better bona fides than Gab.
Later
It's probably not just a coincidence that every time this comes up on HN, there's a Popehat thread about Gab at the same time. Here's Ken today with a telling citation to Gab's own Twitter account from earlier this year:
Later
It's probably not just a coincidence that every time this comes up on HN, there's a Popehat thread about Gab at the same time. Here's Ken today with a telling citation to Gab's own Twitter account from earlier this year:
https://twitter.com/Popehat/status/1027671587825172480