Do all techs use “he” pronoun?

I am not sure how I feel about finding out the gender but today I noticed the tech kept saying he. Like “he turned” “see his little legs” “he doesn’t want to show his face”. This was after she asked if we wanted to find out, we said no, and she said she wouldn’t tell us and sealed it in an envelope. Is it common to use the he pronoun? I also thought I saw something in between legs so I’m pretty convinced it’s a boy but part of me still doesn’t want to open the envelope!!