@louisrcouture When a persons gender is unknown or the gender isnt relevant (like when talking about a hypothetical person) then either the gender neutral "he" or "they" are both considered correct. It is up to the speaker to decide which style they wish to use. Personally I find gender neutral he to be the better choice as it tends to sound more natural.
That said if a person wants me to use they to refer to them I am likely to oblidge, but otherwise default to the gender neutral he.