your instructor sounds like a jerk off. it is not his job to expand on the FAR's as for requirements to solo xcountry.
Some of these small penis CFI's have big egos and take it upon themselves to **** on students.
You should have a talk to the local DPEs about hims and see what they think about him.
Nah, I disagree with you on this one. I think that is a perfectly acceptable way of the CFI to cover their duty. There is no set standard way in the FARs for the CFI to determine if the student has acquired the required skill set for a solo cross country. Getting the student somewhere under the hood via a series of vectors not only incorporates som of the FAR required hood time, it also sets up a perfect 'lost, find home' scenario. If the student can find home, then they have acquired the skill set necessary to successfully complete a solo XC.