But it’s not an A with diacritics! A and Ä are objectively different letters, using an A (which in english sounds nothing like Ä no matter how you pronounce it) is misleading. You can’t just switch letters based on looks without regard for the sounds they represent. Case in point the closest letter to Ä is E, not A, the official way to transliterate Ä in english is Ae and if you look at the actual article they use Ä aswell.