I think from most perspectives on the left it's due to Japan trying to coerce more births but does not address how they do not have the societal or financial support structures for said births (i.e. the Japanese work cultural literally forces parents to work endlessly unable to see their kid). Think American latchkey kids of the 90s but even worse when Japanese people contemplate what having a kid would look like (also most are just burnt out millennials wanting to enjoy what little free time they have).