I think it's justified, but I don't necessarily mean it in a negative way. Her competence is certainly an important part of exploring what the series is actually about, namely loss, regret, and what's really important in life, etc. Which you can have even if you are very powerful.

Now that I think about it. Maybe that's exactly the reason why it is not competence porn. Maybe her competence is analogous to a sex scene which enhances the actual topic and not the goal itself like how sex is in porn.

On the other hand I certainly watch it for the competency lol