It’s not an European thing. It’s an awful statistics thing.
People see a lot more trans people on the internet than IRL. Places on the internet usually have big programming spaces. Therefore the place where ppl see more trans ppl is in programming spaces. So now they think that most trans ppl are programmers. After that, they conclude that most trans ppl are programmers. Add to it the snowball effect of memes and now you have a huge misconception about reality.
Given how a lot of women are, don’t be creepy does mean “don’t approach them at all. Unless I’m interested in you, which I won’t tell you because men have to make the first move”.