Because he wasn’t supposed to age or what?
I’m not Ryan, but I assume his argument is this;
“Throughout the course of the OT, we saw Han grow from a smuggler who cares about nobody but himself to a man fighting for a cause. In TFA they basically reset that, they make it so he’s a smuggler again, totally forgoing any character growth that we saw in the OT.”
I think this line of thinking comes from people who aren’t old enough to be able to look back at 30+ years of their life to note the changes they’ve gone through and the similarities that linger throughout.