Sometimes a quick flip through the dictionary can be most helpful on these matters. The argument by proponents of male-centric language goes something along the lines of saying that using “they” as a universal singular pronoun is grammatically incorrect and would only be done by Philistines who have no sense of literary decency. However, history and, ironically enough, tradition is against them on this.
Here are just a few samples of “they” being used as a universal singular pronoun in Western literature:
— Shakespeare: and every one to rest themselves betake;
— Jane Austen: I would have everybody marry if they can do it properly;
— W. H. Auden: it is too hideous for anyone in their senses to buy;
— Shakespeare: ’tis meet that some more audience than a mother, since nature makes them partial, should o’erhear the speech;
— W. M. Thackeray: a person can’t help their birth;
— G. B. Shaw: no man goes to battle to be killed. — But they do get killed;
- From Merriam Webster
All this to say, using “they” as a universal singular pronoun is not bad English whatsoever, nor is it grammatically problematic. Strangely then, it seems to me that the only reason for rejecting a grammatically-appropriate gender-accurate pronoun in favor of a male one would be . . . ideological. Imagine that.