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I dunno, if a car kicks up a rock from the road and smashes a windscreen, that’s considered no one’s fault. Even though the car in front kicked it up.
In this case, NASA have assumed that things would burn up in re-entry, based on past experience and modelling. For some reason that didn’t happen here. However, that might not be enough to prove liability - if NASA is considered to already make reasonable efforts to prevent this.
I never even provided my phone number to Paypal, then one day they started requiring me to use it to verify logins.