It's much better to have one bread winner and one care giver. It's been like this for most of human history and it has worked very well. I'm not sure why these new-age articles and psychologists think that they can somehow change it.
Sure, 'millennials' father may not be the kind of dads they want to be - but, hell, at least they WANT to be active parents to their kids. That falls on the positive side of the line for me as it will add emphasis on normalizing paternity leave (for one example) as a legitimate work/life demand.
We are all only a few generations from being peasants. Being a peasant is not the greatest job in the world, but peasant fathers are actively involved in their children’s upbring as they are working alongside them from sunrise to sunset.
Things are often they way they are because it works on a macro and micro level. Sure, some things get into weird feedback loops and drift to silliness, but for the most part, if you see something working for a lot of people, they're not doing it just because of tradition.
The OP is absolutely correct in that many people will find it better to specialise in child-rearing and income-generation for a two-parent family. That doesn't mean one doesn't do child rearing and the other never works, but the primary responsibilities will fall down that way.
That's how it has been for a millennia or three, and that's likely how it will stay. Behaviours like this are all about reproductive success so that's why they the way they are.
Not everyone has to be the superachieving career minded semi-absent parent.
By their example, you have to be pretty ruthless about work/housework/childraising division, though: my parents split weekends and weekdays, so when I was young it was either the day we spent with mom or the day we spent with dad, with a few evenings and dinners together, and as we got older we had a lot of unsupervised freedom (not really a bad thing, imo, but it might mean not living in a crowded suburb or a city). However, it's certainly possible to be on the forefront of the /field/ you are in and still raise reasonably well adjusted kids evenly, it just takes a lot of effort from /both/ parents and a lot of conscious organization and division of tasks. They did have very flexible work schedules (including being completely able to work on weekends), though, which probably made it a lot easier than the (traditional) "You will work from 9am-5pm on Monday through Friday" most corporations (still) expect.
However, yes, it's great that some people are single minded and discover new drugs and treatments for disease and contribute to accelerated human progress.
I'd say that career is a path to afford us what we find satisfying in life. For some people, that's more time with family and friends, hiking, knitting, or social dance. For some, it might be watching netflix. If that's what satisfies, that's what you should do.
For some folks, though, it is their career activities that they find satisfying (i.e. it is the end goal, because it's what they'd be doing with their time anyways, so it's nice that somebody is paying them to do it full time). My parents were genuinely in the last category, but not everyone is or needs to be.