All human written languages are subordinate to the spoken language, with the exception of constructed languages like for software programming. In the convoluted uh mismashed uh, flexible language that is English, even when a word is supposedly misspelled, if it can still convey the sounds of the spoken word, then it can likely be understood. And that’s the ultimate goal of a language: to convey thoughts to others.

I personally do not subscribe to the notion of prescriptivism, which believes that the dictionary is the final authority of words in English. However, the dictionary does serve as a reference, so people who heard the word “ornithology” can look up what it means.

TL;DR: humans have error correction capabilities