Correct: XMR is strong on privacy, BCH is easy to use.
Partly true: XMRBazaar is good but still small, Nostr is relevant but limited.
Opinion: “most robust” and “not cash” depend on perspective.
A more honest summary:
#XMR excels at private value protection.
#BCH excels at ease of use for payments.
They don’t replace each other—they serve different roles within the crypto ecosystem.