OP should have vibecoded the title, chatbots know how to use apostrophes.

There is technically a rule that allows for 's, and acronyms are one of the possible uses

I think you are wrong in this case. For example, many people would write X's when talking about multiple instances of the letter X. As another commenter said, there are exceptions and acronyms can be one of them.

But I upvoted you anyway because us pedants need to stick together.