I don't know anything about them.
After reading your message, I googled some matches and read a couple of articles. I am still confused.
On the one hand, it seems they are highly committed Catholics, actively evangelizing. That seems great to me! It seems like they are also creating a real sense of community in Christ. Another big
On the other hand, some articles mentioned "spontaneous expression" of liturgy in their Mass??? If this is another LifeTeens-type thing with liturgically-abused Masses, then I would find that offensive. And if they are creating real division within parishes, that may or may not be a problem. If it stems from some form of elitism, or actively shunning non-members, that is one thing. However, if the division occurs because they are professing genuine Catholicism and a bunch of wishy-washy cafeteria Catholics get "uncomfortable", maybe that discomfort is part of the Holy Spirit's plan.
I'll be interested in hearing what people have to say.