The liquidations are pursued by liquidators not an algorithm… they are affected by many factors besides the smart contract code such as network congestion and market liquidity which impacts price slippage in case of large liquidation volume
Aave has its own risk appetite that prioritises security unlike some of the protocols you have shared which have been subject to exploits or hold bad debt. Here, Compound is the protocol that is the most comparable to Aave. YFI LTV is 0% on Compound, does this mean Aave should follow?
There are a lot of variables to take into account, please read the reports to understand the perspective of experts who have spent years analysing and modelling the protocol and ecosystem. This has a lot more value than just looking at what others players are doing