They probably assumed you didn't buy Pokeballs yet since he gives you 10 of them.
That I didn't mind so much, I'm honestly used to the game not letting me buy pokeballs until after I do something else first.
What bugs me about him is simple:
Him and the rest of the scooby gang just kinda follow you everywhere. Its like they're the [tornado fang]ing tutorial, I pass the daycare center for example and suddenly HEY CLEFANT LOOK ITS THE DAYCARE WANNA DROP A POKEMON OFF?
He says stuff like "Lets have a competition to see who can be stronger" implying he'll be like Brendan/May in Ruby/Sapphire and be your main rival, but I've not fought the guy once, instead I keep fighting ALONGSIDE HIM, I can handle a double battle on my own, Calem, I don't need you to bring Espurr in just to have it get killed by two faint attacks in a row (by the way that was hilarious).
He's also doesn't wear a hat. That's like a Pokelaw violation or something, if he's supposed to be the male main character I don't care if I'm not playing as him he still needs his [tornado fang]ing hat.