I'm going to stop responding to your comments after this reply because this thread has gone far enough off-topic, and also because you're obviously an entrenched anti-feminist, and your responses are going to be very predictable. For example, you are conveniently ignoring the comment I made about the usage being sexist but the person using it not necessarily having sexist attitudes.

Getting offended at a pronoun is a weakness.

Again, you don't have the experiences or awareness to have the right to call me weak. It's an uninformed opinion. It's also interesting that you're accusing me of weakness while you're being so defensive of this particular piece of the status quo.

The use of they has been around way longer than feminism,

Such a strange statement. No one claimed that feminism invented the singular "they." You seem to be very defensive about feminism, to the point that you bring it up when it's not even relevant. This is beginning to seem a little like a fixation...

This is a distinction made by feminists and feminist linguists.

You keep referring to statements or people as "feminist" as though this is evidence that they're wrong. That's not how it works, though.

It's a distinction made by people who care about accurate labels and who are aware of the non-gender-neutral interpretation of "he" when used as a generic pronoun. We have evidence from history, where it was argued that generic "he" did not include women (e.g. the Persons case); this could not have happened if it was unambiguously gender neutral. We also have evidence from grammaticality judgments, as speakers tend to object to sentences like these:

Everyone should have the right to a home birth if he desires one and his pregnancy is free from complications.

We also have evidence from psycholinguistic studies such as this one that show that readers do not interpret generic "he" in a gender neutral way.

So, it's not a feminist distinction; it's actually just using a label that is a more accurate representation of the facts. That is, generic "he" is not gender neutral, because it's neither used that way nor interpreted that way.

It wasn't necessary to talk about another language, however, I can't imagine you reacting any better to a gender-specific grammatical construction in another language.

Again, this is unnecessary and inaccurate. But also, this really just a problem with your imagination, which seems to be very blinkered by your preconceptions about people.

You're doing essentially what feminists, and NOT linguists,

Feminists and linguists are not mutually exclusive groups of people.

I'm sure you're a great scientist, but being a good scientist in one field doesn't necessarily make you authority on another field.

I'm a linguist.