Gab is an American alt-tech microblogging and social networking service known for its far-right userbase. Widely described as a haven for neo-Nazis, racists, white supremacists, white nationalists, antisemites, the alt-right, supporters of Donald Trump, conservatives, right-libertarians, and believers in conspiracy theories such as QAnon, Gab has attracted users and groups who have been banned from other social media platforms and users seeking alternatives to mainstream social media platforms.
Web 2.0 (also known as participative (or participatory) web and social web) refers to websites that emphasize user-generated content, ease of use, participatory culture and interoperability (i.e., compatibility with other products, systems, and devices) for end users.
It gave a voice and place to gather for all of society's crazies.