No. I’m certain I’ve seen that exception over the past few years on Stanford’s website.
(If I recall, it was Harvard which previously did not have this type of exception, but does now.)
Adding: plenty of older discussions on this. Stanford has had the exception for a long time. Here’s an old CC thread from 2016.
The old Stanford website link from that thread, as captured in Aug 2015 includes the exception.
Nothing wrong with calling to confirm, but REA Stanford + USC early scholarship deadline has come up enough on this site, and the exception going back for years, that I see no issue applying to both.
Another edit: whoops, I completely missed your other post about USC now having EA. But, the exception would still apply (must apply EA for scholarship consideration).