To be fair, him NOT being female shouldn't bother people this much either. Especially since he's always been a male in the past. Honestly looking through the thread the people pushing for female Link have been far more aggressive and antagonistic than the people that seem happy to have classic male Link.
It's bothering people because of the implications that it was a female character. Many thought we were going to get a female lead and Aonuma with his trolling supported the idea even more.
You can't see why that would bother people?