There is a mechanism to unstake it's controlled to 6 leavers per epoc, reducing if that's an issue: it has been thought out. It's not live yet which is slightly different.
Re:The Ethereum merge is done
by staringback on Thursday September 15, 2022 @12:16PM
(#32854258)
If a staking pool refuses to accept a block with a tornado cash transaction as valid, they will be penalized and forcefully removed from the network.
2. Having a centralized staking pool means that there could be governmental sanctions a la tornado cash coming on such "validators" for facilitating North Korean payments and such. Once again, not a good look.