So then the issue isn't "Calli always underperforms in collabs," but rather "she sometimes underperforms in collabs," which I'd say was a problem with pretty much all of HoloEN sans Kiara. And I don't think Calli ever had this problem with kouhais; pretty much all of her interactions with the ID branch went swimmingly. Additionally, the chemistry between Calli and Gura has been lauded since the very beginning, and that hasn't changed. She was also in high spirits during both collabs with Ina. And even with Watson (who I'd argue she has the least amount of chemistry with) she gave us a satisfactory Halo collab and a legendary Clubhouse 51 collab.
So basically, this problem with Calli has been blown the fuck out of proportion compared to the other HoloEN members and the autism came in full force during the collabs with Coco and Gigguk. The only time where I'd say the autism was justified is the Shadowverse collab with Kiara, when Calli got too into the game thus barely talking to Kiara the whole way. Then Calli vowed to improve with future Shadowverse streams (and of course /vt/ards complained about that).
Of course Calli was nervous during the Meme Review, she was in front of 75,000 viewers; almost anyone would be on edge. Watson too, so she really didn't do that much better than Calli (that episode was salvaged by having better memes and Watson being more into the content by nature, though her input was almost as lackluster as Calli's; I dunno if that's a hot take).
>>"meme review happened and even management complained to her about it and she vowed on twitter to change this"
I don't recall this happening with Meme Review, only with the doomed Cuphead collab with Gura that became Phasmophobia. Though I'm sure she'd felt the need to improve from Meme Review since there's a visible effort on her part in the Mario Party collab.