In simple terms, the statement suggests that Indiana has a population characterized by sincerity and genuine friendliness. It highlights the positive attributes of people who are down-to-earth, meaning they are humble and straightforward without pretensions or airs.
Beyond its literal sense, this quote delves into the essence of community values and authenticity in human relationships. Jim Harbaugh is pointing out that Indiana's residents value honesty and a lack of superficiality. This can be seen as an endorsement of the state’s culture where people tend to connect on a deeper level due to their genuine interactions. Moreover, it speaks about the importance of being authentic oneself and appreciating others for who they truly are, rather than their outward appearances or social status.
Jim Harbaugh is the head coach of the University of Michigan's football team but has strong connections with Indiana, having previously coached there. His reputation as an outspoken figure in sports often includes comments that reflect on his experiences and observations from various places he’s been associated with.