Yes, your edit there is the sort of thing I had in mind. Realistically yes, we are going to evacuate once the checklist has commenced, but I would consider it unwise to assert that:
whether the fire has gone out or not is an irrelevant concern at this point, as you've already made the decision to evacuate.
holds true 100% of the time. There may be an occasion where it might not be necessary, however improbable it sounds discussing this specific scenario. Remember, not every evacuation occurs after an RTO with an engine fire.