You must not use any open source software, because much of it comes with a whole paragraph of ”IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY“
If you read the fine print of most commercial software you'll see some language to a similar effect. When's the last time Microsoft got sued due to an outage caused by a bug in Windows?
An outage is not the same thing. A similar thing would be if Outlook 365 started sending emails on your behalf or changing around words in them, or if SAP / Quickbooks said: "No guarantee that the numbers you type in match the results of the annual statement we produce", or if Tesla was like "You should absolutely not use our cars for driving anywhere".
If you bring language like this into more traditional fields, it feels absolutely bonkers.