[relativ575]

You are very hostile in this thread. The GP didn't say anywhere that it was ok for people to be uninsured. Neither did they say they were among the 55% figure.

Secondly, it's easy to find some official figures - [0]

From January through June 2023, among people of all ages, 7.4% were uninsured, 40.7% had public coverage, and 60.8% had private coverage at the time of interview

And:

The percentage of adults who were uninsured decreased from 14.7% in 2019 to 10.7% in the first 6 months of 2023. Public coverage increased from 2019 (20.4%) through the first 6 months of 2023 (23.6%). No significant trend in private coverage was observed between 2019 (66.8%) and the first 6 months of 2023 (67.7%)

In other words, the majority of people in the US (> 90%) have insurance -- private, public, or both.

[0] - https://www.cdc.gov/nchs/data/nhis/earlyrelease/insur202312....