[runarb]

if the author does not have the time, they could ask an English-speaking acquaintance to proof-read their docs.

I doubt it is the lack of time. But natively English-speaking acquaintance to proof-read technical documentation can be very hard to come by. Most projects have to do by with the folks they have. ( I am in need for such a person myself. If anyone has the time Searchdaimon ( https://github.com/searchdaimon/enterprise-search ) could need some help :) )

One trick can be to at least wikify the documentation so other can easier pitch in.