A few people already addressed this, tons of first-time applicants have successfully received 10 year passports (me too). I’ve yet to read on this forum a case of a first-time applicant being denied a 10 year passport after they asked for one.
Myself and many others here got 10 years as a first time applicant. There is no restriction other than $$. People take 5 years only in case they feel they will use up the pages faster so will have to renew earlier than the 10 year mark
Ok, thanks all !correct, he got his passport in one week, validity 10 years, all ok, no issues