Can you provide some evidence they catered to hate groups? It was my understanding they attracted hate groups due to their policy of 'free speech', but did not specifically cater to them
The American National Socialist shows a huge group of Nazis plus a Swastika in their banner picture, does it really matter then how many followers they have?
Not that it's representative, but it is certainly a "feature" of gab.
However, Gab goes further than that and quite explicitly caters to far right hate groups, as detailed in this comment over on ARS:
https://arstechnica.com/information-technology/2021/03/gab-t...