No, Dutchies don't like it either. I don't think it's language specific. It probably has something to do with how much machismo or political correctness there is in a culture :-)
By that logic, Americans are probably more upset about this than, say, Nigerians (I assume Nigerian culture(s) are rather less PC than American culture).
Right, but that gender-neutral he only works we're talking about a "generic" or hypothetical someone. You cannot use in (say) Facebook or Google+ for a text referring to a female friend.
In English, some people still use they/their in this case. In Portuguese (and I think Spanish and other major Latin languages) you can't do that.
By that logic, Americans are probably more upset about this than, say, Nigerians (I assume Nigerian culture(s) are rather less PC than American culture).