It looks like the demons were furious that Fr. Ripperger was in their territory!
Hardly.
Of all the reasons he cites for the increase of diabolical activity, he fails to cite the New Mass as the #1 reason for it. Tridentine Mass being offered all over the world used to flood with grace and thwarted diabolical activity.
#2 reason is the emptying out of the monasteries and convents, as the prayers and sacrifices of religious also militated against diabolical activity.