Never mind the Spam for "concept cleaning", whatever that is. Bar Keepers Friend contains oxalic acid, a fairly strong acid that will indeed etch metals. Sorry your stovetop ia damaged. I will remember to be careful with BKF. Though I have used BKF suiccessfully on my stainless steel sink. I sprinkle it on, wet and work fast. I would not let it sit. Thanks for sharing your experience.

Several years ago I used Easy Off oven cleaner on some stubborn spots on my SS cooktop. The area I treated with the oven cleaner cleaned up beautifully but left an obvious difference from the rest of the surface. After I got over being angry with myself I sprayed the entire surface. Alas, it all matched. After more hours of cooking and wiping down you cannot tell anything ever happened to begin with. You might consider doing an "all over" with the BKF.

And Lindac is spot on with using steel wool pads. In my case Brillo pads worked magic in conjunction with the oven cleaner.

Let us know. We feel your frustration.

you could try some very fine wet/dry sand paper, either 320 or even 600 grit.
I used it all the time on my stainless steel sink and it polishes it beautifully.
you must use it wet so it won't scratch and sometimes I use it with BKF

If the surface is truly damaged, hopefully some of the other suggestions will work. If it's just a slight discoloration, try rubbing the surface with WD40. This works for streaks on s/s surfaces, so may pull the surface together.

Any port in a storm:-(

I did the same thing to my ss stovetop tonight with bkf and water. Just wondering if any solution was ever found to fix the discoloration?

Does anyone have more solutions for this? I dealing with some darker cloudy areas on my SS sink from letting Barkeepers Friend sit overnight. Yes I feel stupid. Should I use some fine grade sand paper?