I think you can’t accept that there are many concepts that can’t be expressed in any language other than English. I am a scientist by background, trained in multiple fields for over 20 years, and yet I only have an understanding of a tiny fraction of all the scientific concepts out there (I can’t say how low, but well under 0.01%).
The vast majority of concepts (distinct ideas) that I personally know are scientific. With almost all the scientific concepts I know it is not possible to communicate to someone about the concept in any language other than English because the background concepts are missing from other languages. This is not because English is inherently superior to any other language, just a consequence of English being the common language of science.
You see this when you go to a scientific conference - people who speak a common language other than English will chit-chat to each other in their own language, but when you hear them talking to each other about science it either totally in English, or a hybrid where ever second word is English - there is often so much English in these conversations that I can follow along even when I have no understanding of the base language.