No. He is allowed to buy them and give them to you, most especially if he is going to the parks with you. What he is NOT allowed to do is sell them to you.
I will say though that I'm not sure what California Resident tickets you're referring to? Sometimes they have SoCal specials (not CA specials), but they aren't offering any currently. All they have right now is SoCal AP's, and in that case, no, you cannot use those if you are not a SoCal resident.