There's definitely an ongoing push to change the English language. An example, I started listening to podcasts a few years ago and it can get rather obvious. There was one episode of a show where they were reading fan mail and they were asked to no longer use such and such word, and instead use this other one. They wholeheartedly agreed to it and stuck to it. In another show, one of the hosts got called out for using a certain common word, and said that yeah, they still catch themselves using these terms but are trying to be more sensitive or whatever.

And then there's the news media that can be downright aggressive about it.

It's not right that you were docked points. Some teachers are nitpicky like that. Some push their views onto their students. On occasion they're abusive and shouldn't even be in that profession. But to quote one of my junior high teachers to the class after a bad and frankly bizarre experience with a regular who was substituting, "You should be able to tell the bad teachers by now."

I mean, there's even a push to change the name of manholes "because sexism."

Edit: Saw that this was in Turkey. As I don't know how things are there I'm not sure how much of what I just said is relevant for you. Maybe they truly believe that, or maybe they think that they're preparing you for the "real world" in English speaking countries.