I am always rooting for AMD but this is entirely their fault. They do not seem to engage with devs or the community to promote FSR3 when we know it could be a game changer for many non-RTX gpu owners.
If they neglect it like the FSR 2 upscaling shimmering issues then more and more people will turn to Nvidia in the long run.
Yes the native mode using FSR2 as the AA method is broken. I've also noticed this problem in other games that support Native FSR2 such as Forspoken. Not sure how that is possible when it is supposed to be just AA on the edges of polygons.
AMD seriously needs to sort this issue ASAP since that is the main reason why Xess and DLSS always look better in motion.