Open source means you are allowed to see the source code, and to modify and/or share it. No warranty or support is implied, and some software explicitly disclaim any such responsibility.

'I only want smart users who don't complain' is the most arrogant attitude a dev can have.

I don't think any dev wants users who don't complain. But when their time is limited, they want users who will submit useful complaints.

Also, maybe the situation will become clearer if you ask yourself why open source devs share their code for free. They aren't (usually) getting paid to do it. They are giving you code they probably wrote for their own personal use, in the hope that you might find and report issues with it, and thus help them make their own copy better. So if you aren't good enough to do that, well, they might help you out of the goodness of their heart, but you really aren't entitled to their help.

Ok then maybe more open source projects should get funding.

I mean, yes?