For being the role of protagonist in a narrative sense in a entertainment value for the readers, inexperienced, it's a common trope for most protagonists already. But in a charatcer comparison, if you truly want to make a good character, and don't care about being protagonist or narratives, just simply writing a character, being experienced shows how greatly detailed they are as a person. Inexperienced is like a self-insert kind, while experienced feels like they already existing person who has history and knows what their life is. It just depends on what you value, the character, or a narrative.