Huh. I don’t know if I’m picking up what they’re putting down here, but it kind of sounds like suppressing fever e.g. with Tylenol would actually be bad for (normal) flu progression.
Very simplified... It is a suppressor of symptoms like pain and fever which are the bodies way of letting you know something is damaged and killing off unknown foreign bodies respectively.
Suppressing symptoms does not remove the cause and is not a cure.