I have worked in law and tech. I have seen many men who took hardly any time off in law firms because it was heavily frowned upon. In tech, it is much less frowned upon, as evidenced by the fact that many big tech companies offer the same leave to fathers as mothers.
I believe the reason for the different behavior is not that lawyer dads don't care about their kids/wives as much as techie dads. Rather, I believe it is because in the cultural context, they feel pressure not to take much leave. So by putting pressure on companies to make the option a real one for fathers, I think we could make fathers happier (and kids/mothers also) by allowing them to choose the option that they would want if they could do so without repercussions.
Also, there is something to be said for leveling the playing field for mothers. So while I will agree that we don't want to force people to do anything (and my suggestion actually does not force anyone to do anything), there can still be valid reasons that a society would want to incentivize people in certain ways for the good of the society as a whole.
In The Netherlands a similar law was put in effect in July 2020. I'll reap the benefits of this very soon (my partner is due tomorrow). I don't believe its fully paid though (IIRC 70%). Before this it was two days. TWO days!
This is our second child, and from the first one I know I still had lack of sleep the first 48 hours. The first week is the roughest (especially for two autistic parents an absolute hell with lack of sleep plus all kind of new stimuli), with the following months almost as severe. I believe it is incredibly woman unfriendly (I'd even call it misogynist) to give men no time from work.
On the father and mother this leads to less fatigue, burn-out, and on long-term better output. For the child, I believe its difficult to see the effect on this on short-term. For example, the effect of father-child bonding might not be seen on the short-term, and its also no guarantee, so you'd end up with some kind of correlation in a study. Proving a causation on this is going to be difficult.
I believe the reason for the different behavior is not that lawyer dads don't care about their kids/wives as much as techie dads. Rather, I believe it is because in the cultural context, they feel pressure not to take much leave. So by putting pressure on companies to make the option a real one for fathers, I think we could make fathers happier (and kids/mothers also) by allowing them to choose the option that they would want if they could do so without repercussions.
Also, there is something to be said for leveling the playing field for mothers. So while I will agree that we don't want to force people to do anything (and my suggestion actually does not force anyone to do anything), there can still be valid reasons that a society would want to incentivize people in certain ways for the good of the society as a whole.