Not always. Sometimes telling someone else the truth about something that isn’t really that important for them to know (meaning if you didn’t tell them about being adopted, or that their long time ago former boyfriend cheated on them with another friend that they they no longer have contact with now, or telling someone that they look fat or ugly or that they’re implorably boring or a terrible cook) could be extremely hurtful or embarrassing to the other person.
Also, I have learned that telling the truth to an HR person at work, especially if it puts someone in a higher position than you in a bad light, even if they clearly did commit a crime/fraud/sexual harassment/safety violations and you have proof, is likely to get YOU fired, not the perpetrator of the ugly deeds. The reason being, is that the company knows that it’s easier to simply fire a lower paid, lower status person, even if they have proof of a higher ups wrong doings, because it’s not likely that the lower status person can afford to retain an attorney and doesn’t have the time to pursue legal action if they’re busy looking for new work. And being a whistle blower tends to get you blacklisted, not looked upon as a person of integrity. Just watch 60 Minutes every now and then.