Hugo Nguyen has a bunch of great work on the topic on his medium

https://hugonguyen.medium.com/proof-of-stake-the-wrong-engineering-mindset-15e641ab65a2

https://hugonguyen.medium.com/proof-of-stake-private-keys-attacks-and-unforgeable-costliness-the-unsung-hero-5caca70b01cb

Indeed the whole reason this chain exists is due to a long tail event problem with DPOS that required humans to fix. And that's fine for a social network but not for a world reserve currency.

DPOS solves A few of the problems of regular PoS But introduces others (Validator collusion or coercion), either way what you get out of it is a massively increased throughput. Traditionally in blockchain a high throughput has been advertised as something desirable to compete with Visa, but should be recontextualized as a useful tool for social media. Visa is an L2 anyway.