> "you owe nothing and can do with it what you wish: sell it, fork it, modify it" in exchange for "the author provides no guarantees and is not liable for this software".

This is demonstrably not how many people many treat open-source authors. Just look at how the Log4J folks are feeling right now: https://twitter.com/yazicivo/status/1469349956880408583

I do have some open-source code out there where people have been mostly pleasant and reasonable. It's targeted at developers in particular niches and they do act mostly as you describe.

But once it shifts from a peer relationship to a producer/consumer relationship, things can easily get ugly. Ugly in a way that drives people out of open source and keeps people from open-sourcing useful code. You appear to be fine with that. But if anybody's delusional here, it's the people who expect to keep taking from open-source software without worrying about its sustainability.