While Twitter hasn't yet directly compensated many Nazi writers for their work -- to the best of my knowledge, anyway -- Substack has very much done so, signing bonuses and paycheques for which any professional writer might rightly salivate. Those bonuses are drawn from the ad revenue not just from their intended audience, but from LGBTQ+ and similar writers who have been ascribed a mere pittance in turn.
Some include Graham Linehan and Richard Spencer, who crowed happily about their payment figures.
So while they use Twitter for the larger audience, they're happy to draw subscriptions and funding in general from Substack, which gives them a great deal of leeway in return for bringing to the platform All The Nazi Eyes.