I agree with your points when it comes to commercial software. You should do your best for your users. However, I have spent the last ten years or so writing some reasonably popular open source tools. I have met some lovely, lovely people who use my software. It makes my heart sing with joy to know I have helped out random people all over the world.

I have also got vitriolic, self-entitled emails from people who assume that I owe them something because they have downloaded my software. In one case, a user suggested I should kill myself (!!).

So yes, you should treat your users like human beings while also realising that in the open source world, you owe them nothing [1]. Do your best and don't worry about it after that.

[1] https://mikemcquaid.com/2018/03/19/open-source-maintainers-o...

EDIT: mispelling.