MANAGP
Actually, it has historically been the case that the word 'degrees' was optional after any heading instruction.
This (relatively) new ruling states it must be used for headings ending in 0, the optional part still exists for other headings.
It is still correct phraseology to use it for headings ending in 5, but not mandatory.
I applaud your crusade for correct phraseology, however your issue over the use of the word degrees is really a non issue. Even if it was not allowable, it's use does nothing to detract from safety, and it does not increase workload one iota.