If we all close our eyes perhaps the problem will go away...
What problem (for the government)?
Going the route of a smaller imperial family will doubtlessly be a problem for Emperor Akihito and those who agree with his ideas about the monarchy, but it will be welcomed by Prime Minister Abe and those who agree with
his ideas about the monarchy.
And with eyes closed then eventually the royal family will fade away and will be be no more....such is the way of getting rid of a monarchy be it constitutional or not.......
Does Japan really want that to happen?
I don't think there is any chance of Japan getting rid of its monarchy in the near future, even if the current imperial family goes extinct.
See my post #1074:
There is no risk of the monarchy going extinct as long as a heavy majority of the population and politicians continue to be in favor of the monarchy. There was an
Ipsos MORI poll this year with only 4% of Japanese agreeing that abolishing their monarchy would "make things better", while 35% thought it would "make things worse". Should Hisahito never produce a male heir, the Imperial House Law will be amended so that there is a successor.
But continuing as is increases the risks that:
1. The number of royal engagements undertaken by the imperial family will drop.
This is guaranteed to happen when the older generation retires and the younger generation of princesses are married, since the latter will lose their status when they marry, and the imperial family will shrink.
2. Hisahito's successor grows up as a private citizen, not educated for taking on the duties of an emperor and not likely to have stayed neutral in relation to his or her business engagements or political stances prior to being chosen as the successor.
That would be expected to happen if Hisahito cannot produce a male heir and his daughters are not allowed to reign, or if he produces no children. All of the relatives who would be under consideration for succeeding Hisahito (descendants of ex-princesses and male-line descendants of ex-princes) would be commoners.
The knowledge that the public overwhelmingly wants to maintain the monarchy, and would not want to get rid of it even if the current royal line were to go extinct, is one of the reasons why delaying is a good strategic choice for politicians who oppose female succession.
Which member(s) of the Imperial Family? Emperor Akihito has sent the clear message that he supports the introduction of male-preference primogeniture, even though he was unwilling to accept equal inheritance.
This is the most important question in this situation. Delay allows to skip Aiko and go to Mako and Kako or, maybe, Hisahito's future daughters.
Aiko is not very exciting potential empress. So the government's decision makes sense.
Abe's government opposes female branches on principle. I do not think they would find the idea of Mako, Kako, or Hisahito's daughter ascending the throne any more exciting than Aiko.