Phonetics can be counterproductive to comprehension, or converting meaning to text. Take an example much closer to English: Scottish Gaelic, which is written with the Latin alphabet. It's considerably older than English, has more distinct consonants and vowels, and it is really difficult to guess the pronounciation from a written word if you only speak English (unlike Welsh, which has nice orthography and is easier than English in that respect).
Because of these difficulties, there is a long tradition of anglicising names of settlements to meaningless collections of letters which when read by an English speaker approximate vaguely to the original Gaelic name. Unfortunately this is not a reversible process - you can't look at a modern anglicised name and guess what the Gaelic is, in general.
Now while Gaelic has a tiny population of native speakers, there are millions of people who know some "map Gaelic" - that is, we can look at a map with Gaelic place names, and understand the elements. It doesn't work for towns and villages, but generally in the north, no-one bothered to anglicise the names of natural features, just the settlements - and walking is the most popular outdoor recreation in the UK, so we learn this when we read maps.
When the first SNP government of Scotland came in, they introduced bi-lingual road signs, even in areas where Gaelic is no longer spoken. There was and is complaint over this, but I found that things became much clearer. I could look at a placename like Machrihanish, and see that it is Machaire Shanais. I still don't know what Shanais means, but Machaire is a type of landscape that I know, so I immediately know that this is low-lying and grassy, and fairly level. I can do this for thousands of place names without being able to reliably tell how to pronounce the words - similar to the way that the pronounciation of a word indicated by a Chinese character can vary widely with the part of China, so that the pronounciation becomes quite secondary to communication.