I don't know if progress made it more hard to spend time with kids, on average.
In older generations, men spent relatively little time with little kids. I don't know if it was social convention or lack of time. Either way, it seems that now a lot more dads are spending time with kids than 2 generations earlier.
I agree that it is hard, but I would not paint a bleak picture.
It was both, however where I lived, a few years before fathers would get up at 6am and go and work down a mine all day, or a shipyard or factory. They might get home at 6pm but after dinner they'd quickly go for a pint or go fishing or go to the football. Women often didn't work, or worked part-time so they could take the kids to school so saw a lot more of the kids and managed the household more.
Now women have the freedom to work, so both sexes can choose to avoid seeing their children if they want to. Bleak indeed.