A safe octane booster, to what end? What's the point of putting an octane booster into your tank if the fuel you are buying is already sufficiently high octane? Do you know what the actual meaning/purpose of an octane rating is?

This talk of "comeback" is a misnomer as well, because it implies that the situation was different at some point. In order to have a comeback, you have to have been popular before.

Not really. If in a football game, one team is up, say, 35-0, and then the other team ends up winning, say, 42-35, I would certainly call that a comeback even though the team coming back was never ahead in the first place.