Yes, I agree.
Thing is you should pay a little attention on wording.
If instead of saying "Nothing but improvements" you had said "I feel there is nothing but improvements", "IMO there is nothing worth my time" or "Nothing in the main story" there would have been no issue at all.
As said a relatively small amount of content is added meaning there technically and realistically is more than "nothing" in the update.
Hardly enough to be worth the wait, but regardless more than "nothing".
Yes, I've not written "Nothing" but "nothing really noticeable", so, factually, improvement is not nothing but not really important for the story, a few pleasures by developing a few side quests is also fun, as long as you don't forget the main aim of the game...
For the main story, since the last concert, I only see Kylian's replacement, it's a little bit short in few monthes and 2 or 3 updates..
In fact, the last important event of the main story was end of november 2022 (The concert) and it was the 0.94 update !
So, eight monthes and 4 updates later, a nearly steady state for the main story (apart Kylian's replacement).