I avoid both comunities like the plauge because of how toxic they are. I base the fall in popularity on the fact that no one realy talks about RWBY outside of those two groups in this day and age. RWBY just dosn't have presence aroud the internet that it used to.
ANyway RT have been half assing their promotion of RWBY for the past two or three years and they seemed all to eager to cast it aside in favour of their new IP's.