I think ive read enough LKML to realize name calling doesn't slow software development and free software devs can handle being told off once in a while.
That's survival bias: Those who can't are not Linux devs.
That's bullshit. I mean, that's one of the main reasons I never bothered submitting a patch for Linux. Many of us really don't like being told off for what we're doing as a volunteer. I reluctantly can accept a limited amount of abuse for a paid project, but my tolerance for abuse for what I do as a volunteer is zero.
Of course, when somebody introduces bugs, that's a problem and should be talked about. But you can do that respectfully without sugarcoating the affair.
That's not how you treat people, especially if you want them in your community. This isn't someone complaining that the 'close' button window control was moved to the wrong side. They've lost their ability to use a large chunk of free software and no one (more or less) cares.
And they're probably frustrated as hell.
The comment you refer to wasn't at all about Qt and the article about accessibility.