The use of ‘he/she’ really annoys me.
‘They’ is much more inclusive than ‘he/she’ and is also quicker to both say and write. Anyone using ‘he/she’ today is either forced to by some obtuse requirements, or is purposefully being bigoted.
‘(s)he’ is no better and is just as needlessly difficult. Also, it is always ‘he/she’, never ‘she/he’. ‘(s)he’ literally demotes the feminine pronoun with parenthesis.
Don’t get me started on cases where an entire document is written with masculine pronouns as ‘default’.