This question is an exact duplicate of:
Does SO have any standards on the idea of gendered language? I believe that it is unwise to allow male pronouns to rule the day. Let me give you an example. I just posted a question where the original title was "Why did a user delete their own question?", wherein I intentionally used the vague (but technically/historically incorrect) pronoun "their" since I had no idea what the gender of the user was, and it doesn't matter for anyone's purpose anyway.
Almost immediately, an edit was suggested to replace "their" with "his". I thought that was inappropriate. I decided to use "his/her" since that seemed a little more inclusive, but that still isn't fully inclusive. Fully inclusive language might be my own personal goal – but how much is that considered a general goal here? I'm not necessarily suggesting editing every question to make them wonderfully gender-neutral, but it would be nice if I knew what the preferred option was. Or should I just take charge and make my own call where I can?