Decoy-analysis heuristucs uses basic statistical heuristics to strip away unlikely decoys in a ring and isolate the real spend, an approach that does not break cryptography but is trivial for a state-level adversary with ample data and resources to execute at scale.

Fair enough. There are many ways (and pitfalls) to reduce the likelihood of such methods being effective, some of which you have control over as a user, some of which you don't. But I think we can both agree it is desirable that those extra cares/steps should not be necessary, correct? Well, as luck would have it, Monero devs agree too, which is why FCMP++ will come soon™. In that new arrangement, do you still find fault with the system? Ring signatures are the weakest part right now, good enough for most cases perhaps, but not good enough for what Monero aspires to be - and this is why "upgrading" the scheme was prioritized.

Love the project; eager to see how that unravels.