A language taking over usage has little to do with its qualities, but rather with the cultural domination practiced by its native speakers. English has some no

A language taking over usage has little to do with its qualities, but rather with the cultural domination practiced by its native speakers. English has some notably easy parts and some notably difficult parts. It's a language with remarkably simple grammar, but the orthography is notorious (see OP) as well as the very large vocabulary makes it difficult to master (although of course a high ceiling in a language isn't too much of a problem if you want your language to spread easily, as long as the floor is low).