Ironically the minimum staking requirements that come with most PoS schemes makes the barrier for entry even higher than PoW.
Not exactly.
Although there is a minimum 32 ETH to become a validator, you can join a pool with basically any value.
Not a whale? No problem. Most staking pools let you stake virtually any amount of ETH by joining forces with other stakers, unlike staking solo which requires 32 ETH.
https://ethereum.org/en/staking/pools/
You can see in ethereum.org website many pools from 0.01 to any eth minimum.
As basically all small miners join pool in BTC, we should compare BTC pools with ETH pools.