Use of abbreviations is one of the greatest contributors to cognitive complexity I've seen in code. There's been plenty of times that I've renamed the variables in a method and all of a sudden what was completely inscrutable is really very simple.<p>Acronyms are a particularly nasty subset of abbreviations because they're accepted in discussion of business needs and even in tutorials and documentation.
I like Elon Musk's approach and its blessing of widely-used acronyms. My industry both uses a ton of acronyms <i>and</i> requires that formal written work define an acronym the first time it's used in a document. This requirement has no exceptions, even for widely-known acronyms like "NCIS"