I agree.
While I personally have never heard "Rules As Interpreted" for RAI, and always knew it as "Intended" - ironically, people generally substitute their own opinion for "intended" anyway. Unless the question is asking for developer citations and is tagged [developer-reasons]designer-reasons, "RAI" is a signpost saying to me "look at this question and see if it needs to be closed as opinion-based."
If you really want to know intent ask a [developer-reasons] question, if that fits the designer-reasons tag. If you are just looking for a reasonable interpretation or you are just saying "how you read it" - say that, you don't need an ambigious abbreviation for it.