Correct, but it misses the point. Users need to monitor their open CDPs and add collateral if they are at risk. This has been done to protect users from paying

Correct, but it misses the point. Users need to monitor their open CDPs and add collateral if they are at risk. This has been done to protect users from paying the liquidation penalty fee, which is ~ 13%. Also, do you really need leverage if your ETH's cost basis is 0 to 30c at the time when market price was in the range of $141 to $816 range? It's all rounding error to you, you can basically print DAI out of thin air.