i feel like some kind of shill, but honestly i'm anywhere from 1.5x to 10x on certain tasks. the main benefit is that i can reduce a lot of cognitive load on tasks where they are either 1) exploratory 2) throwaway 3) boilerplate-ish/refactor type stuff. because of that i have a more consistent baseline.
i still code "by hand". i still have to babysit and review almost all the lines, i don't just let it run for hours and try to review it at the end (nightmare). production app that's been running for years. i don't post youtube videos bc i don't have the time to set it up and try to disprove the "naysayers" (nor does that even matter) and its code i can't share.
the caveat here is we are a super lean team so probably i have more context into the entire system and can identify problems early on and head them off. also i have a vested interest in increasing efficiency for myself wheras if you're part of a corpo ur probably doing more work for the same comp.