Earth is closest to the Sun in January, when the Northern Hemisphere is deep in winter. Which idea does that fact defeat?

1. If nearness set the temperature, January would be the warmest month everywhere. 2. Earth is in fact closest to the Sun in January, in the middle of northern winter. 3. So changing distance cannot be what makes summer warm and winter cold. 4. The orbit really is an ellipse, but its 3 percent change in distance is far too small to matter. _Source: OpenStax Astronomy (CC BY 4.0), Ch 4 "Earth, Moon, and Sky" and Ch 5 "Radiation and Spectra", section 4.2 The Seasons_