The outgassings of the Earth were stripped away by solar wind early in the history of the planet until a steady state was established, the first atmosphere.

The statement is true. Early in Earth's history, the planet's initial atmosphere (composed mainly of hydrogen and helium) was indeed stripped away by the solar wind due to Earth's weak magnetic field at that time. This loss continued until Earth developed a steady-state secondary atmosphere through volcanic outgassing and later biological processes.