It’s good to be wrong about something, because you learn at least two things when you discover an error.
First, you discover “the truth”, a more accurate viewpoint, or whatever the correction is. However, you want to phrase it. “The truth” is a pretty bold phrase. You discover the right way.
Second, you discover about yourself that you believed an inaccuracy. Hopefully, this makes you less likely to kill someone for believing in the same inaccuracy you had participated in and you have more respect for others that believe a different “truth”. Tolerance.
If everything is working well, you learn why you were more convinced by the ly than the truth. This is perhaps the most valuable lesson. Because this will reveal a whole interconnected set of inaccuracies. And give you the chance to clean our your closet, so to speak.
It’s not a good thing to be wrong about something. It is invaluable to discover that you were wrong about something.