I don't know how much Musk is to be trusted. But I did see (I think it was a video interview) where he spoke of Twitter as a public square and it being important that such a thing exist and thrive in contrast to bubbles and echo chambers that don't attempt to distinguish between mainstream viewpoints and extremes. At the time, I accepted that his interest in Twitter wasn't primarily for profit or pushing a specific political agenda. I'll just be waiting and seeing how it plays out.