Generally in English, I think that when it's unclear whether the majority considers an abbreviation to be an acronym or a plain initialism, it's proper to treat the abbreviation as an initialism.
Importantly, people who have only ever read the abbreviation, and not heard it spoken aloud, will assume it's a plain initialism. It's better, I would think, to write something that reads properly to these people—something "more accessible."
The people who are aware of the acronym pronunciation, meanwhile, will be able to adapt their reading either way, because they're also aware that a plain-initialism reading exists, so you're not unduly burdening them in parsing the sentence.
Importantly, people who have only ever read the abbreviation, and not heard it spoken aloud, will assume it's a plain initialism. It's better, I would think, to write something that reads properly to these people—something "more accessible."
The people who are aware of the acronym pronunciation, meanwhile, will be able to adapt their reading either way, because they're also aware that a plain-initialism reading exists, so you're not unduly burdening them in parsing the sentence.