This opportunity works well for investors who want long exposure to ETH while remaining liquid. Keep in mind, your returns are impacted by the price of ETH and this pool's yield.
Your fund are only at risk if Lido validators are slashed for misbehavior, which is unlikely given multiple safeguards in place.
Staked ETH (stETH) can trade below 1 ETH as it is less liquid, has less utility, and needs to go through a withdrawal queue to exit back to ETH.