Just saw this.
To make it clear, I wasn't presenting an argument. I was presenting facts. For nearly 2 months after Vista launched, the OS didn't have any drivers or proper support. That is not an argument. That is a cold hard fact.
If they improved it since then with updates and patches, which I am sure they have, is irrelevant. The point was that upon launch, it was a mess - and nothing you say can change history. So yes, Vista was "legitimately bad" for the first 3-4 months after it was released. And because it was released with what seems to be zero testing on Microsoft's behalf, it ruined the faith and trust of another people who shunned the OS altogether and just stuck with Windows XP.