In my opinion, jargon helps, but English is just easier to learn and shorter to communicate.

My first language is Portuguese, and English was not so hard for me to learn. I studied a bit of French and it was ok, but not as easy as English. And this considering it should be a bit easier since Portuguese is my main language.

Now I'm studying German and... it's way harder than English and French. At least, way more verbose and which more complex grammar rules and conjugations.