My learned definition of "checked" is just being confronted on your views. It could also mean, getting rocked in the face, but that's if it's already a violent situation. It basically just means, coming at the person with the same energy they're putting out.
Eh, seems like he just isn't a fan of kids. Which you don't have to like kids and it's really good to not get into relationships that involve them if you don't. Cause if it doesn't work out and you became part of the kid's life, you're potentially hurting 2 people instead of just one adult. Some of the factors are kind of shallow but again, it's his choice. I like kid's and I wouldn't mind it at all at 30. In fact, I'd rather get to ease into a kid's life, rather than have all the pressure of it actually being mine from the gate lol. Single moms are definitely on my radar. A good Uncle and the first lil while is basically like being an Uncle. You just do all the fun parts of parenting.