stETH/ETH questions. Long winded but need to make sure my facts are straight.

I’m not super familiar with Lido or stETH, but I’m familiar with liquid staking itself. But, let’s say Celsius has to sell its stETH, causing a further depeg from the price of ETH. That means that I could be buying future ETH at a potentially steep discount? If so, I am a patient man, and will happily due such. However, what are the risks of Lido going under do to this depeg? Seems like as long as Lido has the 1:1 ratio, then there is nothing to worry about other than the price of stETH depegging, and eventually regaining said peg, once the masses cash out their stETH for ETH. I have to be missing something right? Celsius may go under, but that’s nothing fundamental to stETH (as a network asset, just price) nor fundamental to ETH, that’s simply Celsius (and probably many more entities) over leveraging. If I’m missing something, please let me know. Otherwise I’m looking to buy some cheap ETH, I mean stETH.