About 75% of this 15.4% APY is decaying token emissions. The real staking / lending yield is ~3.87%. It is single-asset, so there is no impermanent loss to drag you below holding.
Real fee/staking yield: 3.87% · token emissions: 75% of the headline.
No impermanent loss here, so you keep the same price exposure either way. The honest number is the ~3.87% of real yield — the rest is fading emissions, not income.
Source: DefiLlama. Verdict is a heuristic over public data, not financial advice.