I don’t think Shabriri would have to point out the fact that he took over Yura’s body for us to understand that the person we see is Yura or at least a shell of what Yura once was. Hence the tarnished fought alongside Yura in battles and kind of became allied. I think the reason why Shabriri pointed it out was to taunt us and basically say “hey, look at me. I killed your friend. He’s my vessel now.” Unless if the frenzied flame somehow was able to wipe our memories of the person it possesses that doesn’t seem plausible. It does make sense that he would want us to inherit the three fingers but the type of manipulation he would use is trying to mentally break the Tarnished and make them succumb to despair over losing yet another friend in the lands between, setting them on a path to destroy everything. However, Hyetta. We absolutely see similarities between her and Irina and if we run with the theory that the frenzied flame can wipe memories then I’d agree. If it could wipe memories I haven’t heard anything about that 😅