Earlier quoted context omitted.
I was also going to speak about the descriptive and prescriptive approaches to languages, and then dropped my paragraphs because it was not clear to me whether OP acknowledged that singular they was a thing in English. I decided to consider that they effectively acknowledged singular they. By taking a prescriptive approach (telling how people should speak English), maybe singular they can be deemed invalid in English…
> About politics and languages. Politics are constantly shaping the language. This is not new. It's part of the natural evolution of languages. Politics are not inherently bad neither. We don't have slaves anymore in most countries, thanks to "politics". > Actually, I find politics is actually too vague a word, and some people seem to invoke it as a bad thing, saying that we should focus on technical matters when the…
Though you are far from being alone to dislike it. You might be interested by RMS's take on this: https://stallman.org/articles/genderless-pronouns.html
tl;dr: he argues that singular they feels wrong to him, and argues in favor of a gender neutral pronoun "pers", derived from "person". I like the idea, though I haven't seen it used anywhere and would not easily use it.