OP may be exaggerating a bit with their claim that Haiku isn't an OS, but what is important is their frustration. Haiku is billing itself as an OS that runs on PCs and parent is frustrated because it has never run on any PC they have tried it on. That's the thing to take away here. Either they should make it more explicit[0] what it does and doesn't run on, or work harder to support more hardware. Pointing out that it is clearly labeled as beta software and linking to the compatibility list are reasonable responses, but there's literally a comment telling them to 'shut up and get your shit together'. That kind of defensiveness is not useful to anyone.
[0] since there appears to be a list of known good hardware, maybe it should be prominent?
[0] since there appears to be a list of known good hardware, maybe it should be prominent?