In your definition, being unique is being unlike others, so you are heavily shaped by others already, trying to squeeze in to a niche not yet claimed. I don't see how being forced to be unlike others is any better than being forced to be like others: you're being forced either way.
Also, I don't think that asking for advice removes agency. You still have to think if the advice is applicable to your unique situation, how can it be modified to fit better, and which of several conflicting pieces of advice has more merit. An advice from Siri on any life situation is nigh useless without a deeper understanding of the situation, a Siri can't have it unless she lived a big chunk of your life. So, armed with whatever advice, you still remain ultimately responsible.
Also, I don't think that asking for advice removes agency. You still have to think if the advice is applicable to your unique situation, how can it be modified to fit better, and which of several conflicting pieces of advice has more merit. An advice from Siri on any life situation is nigh useless without a deeper understanding of the situation, a Siri can't have it unless she lived a big chunk of your life. So, armed with whatever advice, you still remain ultimately responsible.