Oh come on guys, a Machine Learning Engineer makes $130k - 190k annually easy, do you think anyone who works for Jagex makes that in salary? Sure, ML tech would be great for them. But that's like saying a gold brick makes a great doorstop.
I read about a recent bot ban wave that had a large number of false positives and social media going crazy, maybe that's why the cool period, as they've toned down aggression on banning until they find a sweet spot.