…many years prior there were not enough sidurim in the shul and so they placed a large sign with the words for aleinu on the back wall. So even after the signs were taken down people kept on turning around
Some how I can imagine that many minhagim come from similar types of stories.
Our new rabbi does it. She is an ashkenaz, but she is from Israel.
Does she also say it in English HaKodesh as well?