About 90% of this 0.51% APY is decaying token emissions. The real staking / lending yield is ~0.05%. It is single-asset, so there is no impermanent loss to drag you below holding.
Real fee/staking yield: 0.05% · token emissions: 90% of the headline.
No impermanent loss here, so you keep the same price exposure either way. The honest number is the ~0.05% of real yield — the rest is fading emissions, not income.
Source: DefiLlama. Verdict is a heuristic over public data, not financial advice.