He doesn't have KJ always, he also has all the Kx combos that you beat

not folding ever, snap

Not sure i'm thrilled about raising the flop. Unless the player is a major fish. You have the board locked up and against a Decent reg he will react very easily, i.e. shovel his 3 combos of 77, fold all his mediocre holdings. Unless you balance this by raising Kx for value, and i'm guessing you only have 12 combos of KTs, KJs, KQs to do that with after you flat pre, K7s as well if you flat that wide on the button. And then i'm trying to think of bluffs you'd raise here, 89s, 9T suits? Not many.

As played, cry call river.

raising flop seems unecessary.

Flop raise is a population exploit.

Basically making the assumption that because I don't know the player he is most likely weak, and that weak players at this limit will felt their top pair hands without thinking much about my range for raising a board as dry as this one.

Also no good player would ever lead a board like this as the pre-flop caller.

I think both of those assumptions can be dangerous. Why cant a good player lead here?

Looks like a pretty straight forward call and take a note of the way he played it. I'm also on the "why raise the flop?" bus, against an unknown.