In Nebraska, there are indeed people who inhabit the state, and the author's experience confirms this. J. Maarten Troost humorously reflects on their presence, indicating that he has personally met individuals from Nebraska. This adds a touch of lightheartedness to the idea that the state can sometimes be overlooked or stereotyped.
The remark suggests a contrast between common perceptions of Nebraska and the reality that it is home to real, living individuals. Troost's anecdote serves to acknowledge and validate the existence and experiences of those who live there, challenging any dismissive attitudes towards the state.