bullshit.

you are smart enough to know that there is NO deterministic way to identify the true spend in a ring.

and it's not particularly useful even if you do.

even your own "tracing tool" doesn't do much (if anything) except for a couple of heuristics.

the Japanese and Finnish stories are law enforcement FUDing good privacy tools, plain and simple.

as if they broke long established cryptographic primitives themselves and the ENTIRE FUCKING crypto community didn't hear about it.

do better.