Any person worth reading in STEM fields already knows English, and I don't know why anyone would want to read Wikipedia in any language other than English.
I'm Latin American. I used the Internet in Spanish in my early teens before learning English, and it's a joke compared the English Internet. I don't even like English from a grammatical and phonetical point of view, but trying to cater to the non-English-speaking public seems like a waste of time in 2020. Just learn English already if you don't know it, it will be a much better use of your time than reading subpar material in another language.