You cannot expect the masses to understand acronyms.It's a sad time. I fear the horse has well and truly bolted on the new tautology, "RAT test". Yes, folks, we've got another "PIN number" or "ATM machine" scourge that'll probably be with us for years
These are people who "would of" known better only if they applied a degree of intelligence to the topic.
They have spent their life with a refusal to apply any intelligence to the language they use and accept.