The problem with Twitter is systemic really – it works as a platform for people to promote quick quips and the like, but that's what it does, promotes quickly to your followers through replies and retweets, rapidly pulling in more like-minded people via its algorithms. It's a social signal amplifier. Everything is so siloed that you can say pretty say anything you want and several hundred people will immediately agree. It's rare any dissenting views find their way into the mix because, by definition, there's no option for this, there's no real space to express any kind of complexity within the character limit, so basically it's idea reinforcement and promotion. It's easy to see how that leads to radicalizing, socials groups egging themselves on.
This might be fine when it's about a yawning kitten or something innocuous, but less so when it's something nasty. I don't see how it's avoidable really, and perhaps it's a reflection of any social media, though Twitter does it most sharply. Add in the multiplier which are bots galore, and it's very easy to push and amplify any signal you want. That makes it a platform very amenable to manipulation.
That and the fact that many people on Twitter assume that it is somehow the real world in microcosm, when it's really very not.
Ultimately Elon Musk is one of those men (it nearly always is) who assumes he's rich because he's really smart (and lot's of people make the same mistake), rather than mostly just someone who was already rich and managed to be in the right places at the right times, which is a lot easier when you have the money to enter those places.