People who are beguiled by ego stoking fiction over fact are his natural prey.
It’s also not just him, but basically an industry of Big Data profiling and proprietary Cambridge Analytica social network profiling who are deciding which bubbles can influence people the most and creating them by cherrypicking contradictory claims and evidence to whatever most suits appealing to them. Whatever money can buy for whatever can serve money the best. Social networks are human slaughterhouses to them.
That’s a DLC feature.