How do those with whom we have no prior affiliation perceive us? It is impossible to know without some degree of acquaintance. Yet, new acquaintance, while providing rudimentary insight of how others perceive us, or how we perceive them, also changes such perception in the process. Is that good or bad? It could improve a bad first impression, or ruin a good first impression.
Good or bad, it is more accurate. To most of us, such accuracy is considered to be an asset. Accurate perceptions of others are useful for knowing who is trustworthy and who is not. Mistrust that is justified by accurate perception of character or experience is very different from a lack of trust of the unfamiliar. Conversely, justifiable trust of the familiar is earned with familiarity.
Sadly, some prefer to mistrust and fear the unfamiliar rather than attempt to determine if such mistrust and fear are even justified. For some, their potentially unfounded but very real fear is what prevents them from exploiting opportunities to become more acquainted and perhaps more comfortable with the sources of the same fear. Some merely lack opportunities to exploit.
What is worse is that there are a few who seem to crave mistrust and fear, regardless of their ability to engage sources of their mistrust and fear, and potentially dismiss unfounded threats. Although they do not likely live in constant fear, they claim to in order to justify their disdain for the sources of their alleged fear. They try to convince others that they should be fearful too.
The same accuracy of information that the logical sort employ to dispel unjustifiable mistrust and fear is an incumbrance to those who intently crave the same sort of mistrust and fear. They therefore and merely abstain from the use of accurate information.