The liquidity pool is one of the core technologies behind the current DeFi technology stack. They make it possible to diversify transactions, loans, income generation, etc. These smart contracts power almost every part of DeFi, and will likely continue to do so.
Developers can have an administrator key or other privileged access in the smart contract code. This can allow them to potentially perform malicious operations, such as controlling funds in a pool.
Because many of these DeFi protocols depend on each other. If one of them is interrupted, we may see a destructive chain reaction effect in the entire DeFi ecosystem.