I think the missing context is that Huawei is one of the largest technology companies in the world, every thing they do is built on linux, improving it would improve their business but their contribution to the project is a spell checker. Ok but clearly not their finest work.

NSA has implemented backdoors in software through bug fixes that appear to be just benign typo or spelling fixes but actually allow an exploit in combination with some other exploit etc. To any one accepting the patch it just looks like a typo fix maybe a little odd but nothing dangerous.

Huawei have the people with the skills to do really impressive work but they spend that time and resources fixing typos, this is a little odd.