Like, if I were a woodworker, and made free chairs... you would be right in complaining if it was full of splinters, if it required you to buy hardware and drills, if it was uneven and clunky. It's a shit chair. There's no dishonor in acknowledging what it is. I would not expect a pat on the back just because I made it free.
Open source software is rarely "here's a free chair, that also doesn't have splinters." It's far more often "Here are some free blanks for a chair I made. It's not totally finished, so you'll probably need to do some work on it yourself. But the joints are easy to dis/re-assemble, so feel free to examine it all and modify or replace them to meet your needs. Also, don't sue me."
In that context, it's much more understandable, not because anyone's wrong per se, but because fundamentally the expectations are mismatched.
It seems unfair to complain that you're getting rough products when you're snatching them off the factory floor -- or out of the design room.