ETH has down from ~$1640 after PoS to ~$1340 (~22%) today, and it looks like it will go down more. If you think this is alarming, you should know that the staking rewards won't be distributed before The Shanghai Upgrade is triggered (according to the initial report
[1]). Therefore, a massive dump of ETH staking rewards is still not happening yet.
However, according to Micah Zoltu, The Shanghai Upgrade won't enable the withdrawal: "Many people are shooting for Shanghai, but the core devs haven’t yet discussed what will actually be included…"
[2] This will put investor money in limbo, facing huge dump risk and uncertainty of withdrawal date.
Do you also think there will be a massive dump event?
Think about it, PoS is like printing money without massively consuming computing power like PoW, so the cost of running the validator would be cheap. Thus, the whale can easily dump on you without risking their principal.
[1]
https://finbold.com/kraken-eth-unstaking-not-available-until-the-shanghai-upgrade-in-6-months/[2]
https://www.vesterholdings.com/news/ethereum-developer-confirms-shanghai-upgrade-will-not-unlock-staked-tokens/