>>33442864My guess would be because of how busy July and August are for birthdays and anniversaries. How many of these were concerts? Basically all of them? And then you have Sora's 5 year anniversary in September, which takes probably takes precedence over anything. And ID1's 3D showcases.
Gura's concert was probably low on the priority list because of the logistics of recording and editing a concert when the two performers aren't physically next to each other, versus the JPs who are all physically present for recording.
Or hell, maybe it was the birthday animation. We will literally never know the real reason.