It would be cool to have some universal reputation system across the internet, but I know that's not easy. We can prove that we are a given person (or account holder) using cryptographic means (e.g. Keybase). That negates some of the need to verify accounts manually.
No system will be perfect. We've seen people here with a lot of financial might using it for 'evil'. I hope the check and balances can deal with that. I've certainly seen some accounts with low reputation scores. It seems you can't take their SP away, so they may still be able to do harm, even if nobody respects them.
It's all an interesting experiment. Most of us didn't even try to trust so many strangers just a few years ago.