Who could possibly have guessed when Musk IIRC got rid of the dedicated teams at twitter that co-ordinated with the likes of law enforcement and international agencies, and gutted the moderating teams that this sort of thing might happen.
Well apart from anyone who understood the reasons those teams who did little if any programming and didn't tend to commit lines of code existed.
Hopefully he can get back on top of it, but I doubt it's going to be any sort of priority for him and it's unlikely that many of the people with the skills and training are going to want to work for someone like him, especially as he is known to sack any employee who dares speak the truth or tries to suggest that "going fast, breaking things" is not a great idea when it comes to content moderation and protections.
I'm not going to be at all surprised if it turns out some of the "unnecessary" process and services he shut down to "speed things up" related to things like the servers that check uploaded images and video, or he's removed capacity from those systems to reduce costs.