It does not matter what attitudes people should have. It matters which they actually had.
The "feel that they’ve been unfairly imprisoned in their homes by the rest of society" was very right wing attitude. Even in places with no lockdowns and no restrictions. Even left wing disagreeing with this or that measured would talk about these in less emotional terms.
Given that topic under discussion is US campus and behavior of Americans, the way attitudes are spread in US is relevant. In fact, "Americans" is only relevant demographics.
Also, coincidentaly, similar division occurred across Europe. The people more likely to be influenced by American conservative thinkers were more likely to be hostile to masks and lockdowns.