Because in 30 years of computing experience I am used to my mother tongue being forgotten by American companies when they announce voice dictation software.
I am not sorry if others cannot take critics from those used to be ignored by them.
Even if you'd just asked the question "How good is Portuguese support?", whilst you probably wouldn't have received too many upvotes, I think you at least wouldn't have been downvoted into oblivion. Unfortunately, what might have been an important point will now just get buried.
If you consider that your comment is against the same company behind translate.google.com, which does have a (wonderful) Portuguese support, you'll probably be able to see how unthoughtful it was.
Heck, Google even have specific doodles for Brazil and even have an office here in my city.
I'm a native Portuguese speaker and I'm not pissed off as you are.