Here is a quote from Richard Gaffin’s book Perspectives on Pentecost. Brackets are mine.
The Reformers asserted themselves so energetically on both these fronts [Roman Catholics and Anabaptists], because they recognize that, along with all the obvious differences between the two, they posed a common threat to the supremacy of the Bible (scriptura sola): Rome with its institutionalized, ecclesiastically authorized body of tradition; the Anabaptists with their spontaneous, charismatically sanctioned “revelations,” each endangering the sole authority and sufficiency of Scripture and so the true freedom of the Christian man. Confirmation of these observations would seem to be found in the way contemporary Roman Catholicism has so easily accommodated the charismatic movement.
My first pastorate was in a Pennsylvania town that was predominately Roman Catholic and Orthodox. When I told an older pastor I was going there he said, “The biggest church besides the RC will be the Charismatic one.” He was right. It is easy to slide between the two.