About 94% of this 4.18% APY is decaying token emissions. The real fee yield is ~0.26%. This pool is short volatility — fees stop covering impermanent loss if WETH-USDC diverges more than ±16%.
Real fee/staking yield: 0.26% · token emissions: 94% of the headline.
Break-even fact: a ±16% move in WETH-USDC erases a full year of the fees you actually keep (~0.26%). Whether that move happens is up to the market — but any emissions inflating the headline will fade regardless.
Source: DefiLlama. Verdict is a heuristic over public data, not financial advice.