I mean, I think _intent_, and scale, probably comes into it. Clearly, Facebook does not want this sort of material; its existence is merely a failure of moderation, and something that advertisers can lean on Facebook to fix. It also, realistically, isn't at all prominent; Facebook is not going to abruptly shove it in the face of 165 million people. On the other hand, Musk himself in the past few weeks has posted "Great Replacement" and Pizzagate far-right conspiracy bullshit, broadcasting it to his 165 million followers. Based on this alone, I think most reasonable people would doubt that Twitter has any intention of cleaning up its Nazi problem.
