Hypothetically, wouldn’t defeating the Knight and Carol mean the defeat of the prophecy as well?

Something that’s been on my mind lately is that the roaring is obviously the big catastrophic disaster of the prophecy, right?
It’s bound to happen if too many dark fountains are opened. Okay. So. We know the Roaring Knight is one of the characters working towards the Roaring, not executing it yet for some hidden plan but slowly tiptoeing around it.
My question is, hypothetically, say it was possible, wouldn’t the answer to stopping the prophecy just be to defeat the Roaring Knight, as well as putting a stop to Carol, who seems to be the only other lightner involved with the Knight?
I know these are BIG things to ask I mean we are talking about the Roaring Knight here, but they are the only things standing in our way, aren’t they? And assuming that were to hypothetically happen, at the very least, it would just put a halt on the prophecy until some other evil force trying to cause the Roaring pops up right?
Something on the same premise that gives me this idea is the story of IT, the clown that comes around every now and then to terrorize people only to be stopped by some kids defeating it. Wouldn’t this be atleast one solution to defying the prophecy, even if it isn’t permanent?