That's right. Your turn.
1) arg ugly old man - speaks for itself
2) Unlike most UOMs, I like young people and want them to do well. - He's encouraging both when you approach him for a fight, and when you ask him for his help with the power plant, where he says "I love when young people take charge!"
3) You're in for a hell of a shock if you expect me to be as weak as my fellows. - See what I did there? Anyway, he's much, much harder than the proceeding gym leaders.
4) Of course, after I kick your ass, you'll probably just come back better prepared and beat me into the ground. And that's fine; I reward that. - And again. Many people come back with a decently leveled Geodude and... well, you know.
5) Despite what all logic would dictate, fire is one of the best things to counter me with.
6) Because, you know, it shouldn't be good at MELTING THROUGH ALL THAT STEEL. - He's short on mono-electric types, and has lots of guys with steel as a second type.