It's a good point you raise for the way our language currently is, though. It feels strange to me, however, that English is so dedicated to having gender pronouns in the first place when it doesn't gender things like French or Spanish does. It's out of place. I don't really see any problems arising if English speakers eliminated the use of them overall. There are so few situations where they're truly useful or clarifiying.
I would not know, actually. But the difference lies in the fact that other romantic languages have gendered forms of the word "the" and such. Everything is gendered, despite its inherent meaninglessness. English doesn't have that. We only apply gendered terms to people and their possessions. "He/She went to His/her car", which has a function, but not an important one, really. "They went to their car" works just as well, and eliminating him/her generally adds to clarity because it's used as a crutch too often. People will be talking about three people and will say something like "he told her that they...", which isn't very clear of who's saying what to whom. But in general, without the gendered terms, you won't see "they told them that they...", because now it's mixing singular and plural, and is obvious to even the most oblivious writer or speaker that they're being repetitive or unclear. They'll end up writing "Steve told Taylor that they..." It just generally leads to better usage of language. You'll also notice, as I did while finishing writing this, that I used them or they as a singular here multiple times, and didn't use the gendered terms outside examples at all and it didn't interrupt flow or understanding; I also did things in some sentences such as: Where I simply eliminate the him/her/they, so I'll end up with what I wrote instead of without losing any clarity.People will be talking about three people and will say something like "he told her that they..."
People will be talking about three people and they will say something like "he told her that they..."