This is a great example of why. Most humans have a sense, deep down, that contracts often exist to bridge the gulf between the ethically defensible and the legally defensible.
It's hard to imagine that any sane person who is just looking to use a popular editor would read some broad limitation of liability language like the above, and interpret it to mean, "By the way, we intend to quietly delete certain files created by a competing fork of this project whenever we find them."
It's true that contracts with liability limitation clauses like this are an absolute necessity in this day and age. But there's also a non-legal principle of mutual respect that is absolutely necessary to a healthy open source community.