Point of clarification: "Latinx" is not a real word. "Latino" serves perfectly well, and should be used instead of some made-up word created to assuage notions of wokeness.
In case you just read the "3%" in the title and dismiss it, here's a few of the interesting breakdowns from the survey:
"Young Hispanics, ages 18 to 29, are among the most likely to have heard of the term – 42% say they have heard of it, compared with 7% of those ages 65 or older."
"Use is among the highest for Hispanic women ages 18 to 29 – 14% say they use it, a considerably higher share than the 1% of Hispanic men in the same age group who say they use it."
"42% of those who have heard the term describe it as a gender-neutral one."
"12% of respondents who had heard of Latinx express disagreement or dislike of the term. Some described the term as an “anglicism” of the Spanish language, while others say the term is “not representative of the larger Latino community.”"
Also, technically, all words are made-up. That's how we got words.
It is a word entirely for the American activist class.
The word used by activists in Latin America is “Latine”, if you’re curious. It’s actually pronounceable in Spanish!