"Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE."
Unclear? The fact that it's part of a license does not make it a legal-system-only warning.
The software might eat your dog, and feed your homework. Run it at your own risk, and be prepared to submit patches or fork it to make it behave the way one prefers.
Some bit of open source software does something bad or unwanted which causes people point out that it shouldn't do that bad thing. In this case, not even "the authors of this software should be held liable for the software doing the bad thing", just, "Hey, the right thing to do would be to update the software to not do the bad thing."
Why does this always lead a zillion people to come out of the woodwork to point at licenses and warnings or whatever? Like, yes, there's a warning. Your software having a warning doesn't mean people can't criticize you and your software for doing bad thing. Your software license does not give you immunity from criticism or from people saying you should change your software.
No, you don't have to change the software. Yes, other people are within their rights to fork the software themselves. But they can also point out that they told you that your software was doing the bad thing and you didn't fix it or change it, and that as a result they don't like you or your software or both — whatever. Nothing at all wrong with that.
Sure, and when it does we can say “this piece of shit ate my dog, and the authors of the software have no concept of a duty of care to their users”. And no amount of “well, axually…” is going to make any difference. I have a hard believing someone is copy-pasting a license file in good faith in response.
If my neighbor mows my lawn for free, I'm not going to complain about his workmanship. If I want the job done a particular way, the solution is to do it myself, or pay someone to do it the way I like.
I think this is a decent analogy, but it works better the other way. If my neighbour offers to mow my lawn, I accept, and then he destroys the flower bed adjacent to the lawn, I will be upset, and I will have every right to complain about what he did. If he reacts by blithely dismissing my concern, then I certainly have the right (and arguably the obligation) to warn others that they should think twice about accepting his offers of gardening assistance.
Some expectations reasonably go without saying; "don't destroy my flower bed when mowing my lawn" is one, and IMO "don't destroy my data without a clear warning and a chance to back out" is another, though of course we might disagree about exactly where this does and doesn't apply.