This is like saying you have to many cookies, so I'm going to take away one cookie from you so that I can give it back at a later time. Like, we won't be happy with future magic buffs if the overall power is the same or inferior to pre-nerfed fsoa. This is not an item that just came out, we have grown used to the fsoa's damage for the past 2 years. If this nerf goes through and in a year or so we get a magic upgrade, it would mean that magic's damage would have to stayed stagnant for 3 years! To me this just seems like an easy way to avoid having to make new content.
This is like saying you have to many cookies, so I'm going to take away one cookie from you so that I can give it back at a later time. Like, we won't be happy with future magic buffs if the overall power is the same or inferior to pre-nerfed fsoa
To use your same analogy, I'd say it's more like:
You've baked one cookie with all the chocolate chips in it. So now we can't make cookies ever again, or if we do, they're going to be very unenjoyable - And the person next to you that doesn't have the giant cookie is also going to suffer from it.
Now we can leave you with the giant messy cookie. Or we could pull some chips out of it, and know that we can continue to make satisfying cookies down the line.
Gosh, I dislike analogies.