Two Doctors have told me in the past, specifically the last time I had a really bad chest infection. A Doctor in the hospital (I had to visit twice) suggested I lay off the paracetamol and let the fever run it's course. I had been experiencing sporadic fever for three weeks up to this point, I stopped taking the paracetamol and it was gone within 48 hours. Could be complete coincidence of course.
John Campbell mentioned it in one of his videos this week.
Stands to reason really. Fever is designed to make the body an inhospitable place, if you negate the fever, it becomes less inhospitable.
One study doesn't prove or disprove anything, and of course y'all can disagree with what I say until the cows come home, I still stand by it.