Let's assume that you are just one case and not "the world". Sure, you could say the same about the original article, and I would totally agree with you.
But here it's the bottom line: if it works fine with 50% of the people, that's still not good for anyone who's not a geek (and maybe not for them either). Even 80% is not good enough. 95% is more like it, but probably it would still be too significant. I think you'd need something above 95% of cases to win your argument.
What I am trying to say, is that finding one guy for whom Flash doesn't work is a lot worse than how good it is to find one for whom it works.
But here it's the bottom line: if it works fine with 50% of the people, that's still not good for anyone who's not a geek (and maybe not for them either). Even 80% is not good enough. 95% is more like it, but probably it would still be too significant. I think you'd need something above 95% of cases to win your argument.
What I am trying to say, is that finding one guy for whom Flash doesn't work is a lot worse than how good it is to find one for whom it works.