Gab is unfortunately not the answer, and I’ve been a member for over a year. There’s a basic math problem that for any alternative social network, in that it’s by definition going to disproportionately represent viewpoints that are banned from mainstream media, which then makes it appear to be a white supremacist site, or whatever else that might be worse. Then if the alternative tries to ban those viewpoints, the margin in between is so small as to lose any possible “network effects” (i.e. social networks are only valuable to the extent that everyone you care about is participating).
I do think that Trump and those closely allied to him should try to come with an alternative platform not just to Twitter, but it would have to be all across the Internet even further down to the “root”, i.e. it would need to involve web hosting, payments, security, probably mail, file sharing, news, in addition to the standard sort of social media. Gab for example lost their hosting service, other alternatives have lost their payment processing, etc.
But it’s certainly a worthwhile entreprise, because the way Alex Jones for example was just disappeared from almost the entire Internet has to seriously mute all of our voices, particularly those who rely on the internet for their revenue.
Gab says its mission is to support free speech. Hate speech is still considered free speech. Twitter used to also fully support free speech (up until around 2013), and they weren’t branded white supremacists back then. Becoming “woke” and showing obvious bias is what has ruined twitter.