About 54% of this 8.50% APY is decaying token emissions. The real staking / lending yield is ~3.91%. It is single-asset, so there is no impermanent loss to drag you below holding.
Real fee/staking yield: 3.91% · token emissions: 54% of the headline.
No impermanent loss here, so you keep the same price exposure either way. The honest number is the ~3.91% of real yield — the rest is fading emissions, not income.
Source: DefiLlama. Verdict is a heuristic over public data, not financial advice.