I'm a native English speaker and it's the literal first thing I thought of when I read the name.

> I still don't get what the issue is...

The word "jew" (as a verb) has roots in stereotypes about Jewish people and money; it's an ethnic slur. The word "jew" (instead of "a Jew" or "Jewish") is a dismissive insult. The word itself isn't inherently offensive, but it's often weaponized in English, which is why it has a lot of historical baggage that makes people very wary when they see it.