Personal politics, what age do they live in? Gender neutral has been the norm for quite some time. Females are welcome to exist, both as users and as developers.

As a non-native speaker, I really have a lot of problems using a plural word as singular. When I read it, I always have to read twice to check whether one or more people are meant. I rather read and use “she/he” even with the additional typing.

Some people don't identify as either of those. And there already is a common word that can be used for either singular or plural, which is "you."

And English is imprecise for “you” as well. For he/she/it grammar at least doesn’t change. Substitute that pronoun for they and suddenly the grammar switches to plural. That totally confuses me.

“They” can quite happily function as singular. I asked my friend about this and they gave me their opinion. They told me that they use “they” or “them” to discuss people when their biological sex is unimportant or unknown. I would like to ask them more but they have to leave. They tell me that they’ll be back later.

They (singular) say something. He/she/it says something. They (all) say something. You (all) say something. I say something. You (singular) say something. You’ll notice “he/she/it” seems to be the irregular outlier here. English is strange.

Yeah without the singular they your English is bad. Sucks for non native speakers but it’s how our language works.