read the paragraph again.
it is saying the Protestant believes THEY READING SCRIPTURE ARE THE ONLY AUTHORITY AND THEY REJECT THE AUTHORITY OF THE CHURCH.
it is not saying Protestants don’t believe in the Holy Spirit.
“They are, in essence, the meaning of the doctrine of Sola Scriptura, or “Scripture alone,” which alleges that the Bible – as interpreted by the individual believer – is the only source of religious authority and is the Christian’s sole rule of faith or criterion regarding what is to be believed.”
Seems like they aren’t giving protestants credit for listening to the input of the Holy Spirit.