Maybe I'm biased but my two cents is no. Not at all.
I think people who impose their kids on others are the assholes.
The thing with new parents is that they are, in my experience, completely devoid of any personality they used to have. They may have been fun people at some point, but once they get pregnant, it's pretty much all they can talk about.
I've got some close friends who are on the cusp of becoming parents but my wife and I have made it quite clear we are not at all interested in that part of their lives. And they accept that.
Especially seeing as how you've not spoken to this person for some time, 'catching up' is out of the question if children are involved. Unless they're passed out or whatever. It seems to me this person is just looking for an excuse to talk about their children for a couple of hours while you politely nod and agree. For them, the best case scenario is that you're as happy to be around those kids as they are.
I think you can set boundaries if you are not looking forward to meeting with the kids around.