Does this mean that the follies of your youth become held against you for your entire life? Even if we were somehow shielded until we're 18, youthful mistakes don't stop then. There has been quite a bit of study now that important developments in the brain continue into the mid 20's. Heck, since we often accept anecdotal fiction as evidence around
At one extreme, we freeze everyone into the patterns of their youth. At the other, "I've changed, I've learned since then," becomes a mantra that absolves all responsibility. The difference here is that in the real world, people know you, your speech and actions, and how they all change with time, so they're at least equipped to make a decent judgement, even if that doesn't always happen. In non-meat-space those things aren't necessarily true, especially as so much incoming information is filtered to confirm one's current world-view.