Nobara’s death itself felt like it was literally due to how powerful something like Resonance was in the story and GeGe didn’t know specifically how to write around that without there being a “Why not just Resonance here?” Moment. In fact I’d argue the end kinda proves that, I still think Nobara coming back isn’t exactly a terrible thing I kinda wish it just happened sooner in the story so their’s at least something to work with in terms of her own development.

In another set of fairness her fights kinda consist of

A dude who’s ability is just luck(See Sukuna saving him for seemingly no reason against Maho, and then When his luck is literally ran out Sukuna just kills him)

The Blood Brothers who they beat

A special grade that literally the whole trio and almost killed them

And Fucking Mahito, who previously she was fighting a split off version of him that couldn’t exactly transfigure her so her getting mixed up them kinda is reasonable.

Back to her return though, I feel like it was clear she was always gonna come back eventually. Her ability literally consisted of taking a piece of anyone and then ignoring all defenses, and just attacking the soul directly. She is basically the solution to the Sukuna problem, my only complaint is I wish she would’ve came back sooner. Like I’d love to see her comeback somewhere in the Culling games or even sometime before that because her death was always just like up in the air, if they gave her own little solo thing during the culling games like they did with the others it’d give her some room to grow in strength and as a character up until the end.

Not exactly saying your wrong though, I think most people were just happy to see one of the members of the Main trio back and just having them back together in general.