Although we lately have seen the emergence of gender neutral pronoun, it is rather unpleasing to use "he/she" is an informal discussion forum when the unmarked form meaning is well understood and has been for centuries.

Singular "they" works wonders.

Now, maybe english is not your first language

Only non-programming language, actually.

because this was sincerely very clear and evident that this is what was meant in the message.

I disagree, and that was the entirety of my point here.