They don't for me, tbh. Part of what was fun about prestige classes for me was that there was multiple ways to get to them. It was something a character, theoretically any character in most cases, could work towards regardless of where they started. Like a Bladesinger may have started as a fighter, a bard, a wizard, or more. It felt like a whole world of character possibilities. Archetypes feel more like a doctor picking their specialty of study, at least to me