Thanks for noticing our camerawork. I personally think that it was one of the most troublesome thing to tweak in the whole game. We noticed the issue around 1 or 2 weeks into the jam and tested out a few solutions before settling on the current one.
We used the ProCamera2D package to handle it, but are seriously considering using cinemachine since it is better integrated with Unity’s pixel perfect extension. Either way, I think it’s worth the time experimenting with it. All the best on your future projects!