it was! no idea how it got changed to "Aids"
> However, our style is to use lower case with an initial cap for acronyms where you would normally pronounce the set of letters as a word (eg Aids, Nafta, Nasa, Opec, Apec).
[1] https://www.bbc.co.uk/academy/en/articles/art201307021121335...
Also, it is irrelevant because this is the MIT reader press, not the BBC,and it is literally "AIDS" in the article title. BBC has their own standards. They don't set the standards for every article written in English.
So when you wrote that comment, was TFA's URL a BBC link?
[Diaereses are] now far less commonly used in words such as coöperate and reënter except in a very few publications—notably The New Yorker [..]