The original commenter @[email protected] did neither specify their own sex nor the gender of the people they tutored.
Multiple people under that comment simply assumed that OP is male and was tutoring girls. That is heteronormative. Yes, I formulated that with a bit of snark. But come on.
They are known for making a browser that constantly puts them into a financial deficit. Mozilla is still looking for a way to pay their bills in the long run.