The magic of the system is that it's structured so that people like you can say things like that and not even be lying in any provable way.
Sure, it's not the actual insuring that's costing that much but the massive breakdown of incentives from increasingly vertically integrated healthcare companies (some of whom are insurers, some of whom own insurers) owning increasingly large shares of everything is clearly causing cost to spiral. The industry is making work for itself at out expense. Whether that work happens in the insurer's office or the billing office of the clinic that's owned by the insurer isn't really material. And of course everyone in the process gets a cut so they fight for their bit of it. Doctors used to drive the same crappy cars and live in the same modest houses as the rest of us. Nurse didn't used to be the "made it in life" job for people who come from poor backgrounds.
Dial it back a bit. I just made an extremely banal and citable claim about US health care. I agree with you (trivially verifiable from the search bar at the bottom of this page) about the practitioner compensation racket.
https://nationalhealthspending.org/