Many native english speaker here like to fantasize on the superiority of other cultures / languages but what good are diacritics for when there are
still a shitload of letters that have no diacritics and can be pronounced in different ways?
For example let's take french... A cat is a "chat" but you don't pronounced the 't'. Oh but in "chatte" (pussycat or pussy), you pronounce the t's. While in other words in french you pronounced the 't', like in "table" (yup, it means a table btw).
Speaking of which, the 'e' in "le chat" isn't pronounced the same as the mostly (but not entirely) silent 'e' in "table".
No diacritics on these 'e' here and yet they've got different pronunciations.
Don't come and say: "but that's only with silent letters". Definitely not. "elle" (she) and "le" (the)... Different pronunciation for these three e's.
I've got better: "les fils" (the sons) vs "les fils" (the cables). Exact same spelling. But in one you pronounce the 's', in the other you don't.
Wait, even better: "le fils" (the son) vs "les fils" (the sons). Same pronunciation for "fils", no plural or singular: just one word with a 's' at the end.
Stop romanticizing about french: it probably has more exceptions and weirdness than english.
And you probably don't want to get me started on the average reading and writing skills in elementary and secondary schools in France. It's in freefall so the whole point is kinda moot: the digital natives can't use diacritics properly in french. Heck, many can't even (and don't want to) speak proper french. The language is becoming simpler and simpler, dumber and dumber.
Source: I'm a native french speaker.