Memes

However, if you learn english words through text and then try to use them vocally, nobody will understand you. (looking at you “beard”, who isn’t pronounced at all like “bear” for some reason)

If someone pronounced beard like bear with a d on the end I'd understand them fine. Particularly since the rest of the sentence would probably be perfectly grammatical since the grammar is so simple.

People might understand "Le baguette sont fraîche", they might not. How do they know which words you got right and which you got wrong? They just know nothing agrees. Either way you will sound like a total moron. And you need to learn 3 different grammar rules to fix it, not just one pronunciation.

There is absolutely no correlation between spoken and written english

Come on, this is silly. I'm looking at your comment and almost every word has regular pronunciation. Any incorrect pronunciations would be easily understood. The specific examples you give are just regional differences.