I guess theres always a caveat, but fevers can get too high and go for too long, in which case reducing the fever might be a good idea. But if it gets to that point, you should be working with a doctor to make those decisions.
Typically it's better to just let the fever ride when you have a virus, unless it's making you you so uncomfortable you can't rest/sleep.
Btw, "misnomer" doesn't mean what you think it means.