You're being paid 12.9% to absorb price risk. Only ~4.87% of it is real fees (the other ~62% is decaying emissions) — and they stop covering impermanent loss if WETH-CVX diverges more than ±89%.
Real fee/staking yield: 4.87% · token emissions: 62% of the headline.
Break-even fact: a ±89% move in WETH-CVX erases a full year of the fees you actually keep (~4.87%). 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.