If they can't convince the public they know what went wrong and that it's truly "fixed" in the S8, then they're done in the flagship segment. They could have gotten by a bit with smoke and mirrors if they had gotten the first recall right and the issues didn't continue.
From a consumer standpoint I agree, though I'm thinking back of how many companies actually publicly apologize for the piss poor work of their products. Did Microsoft admit wrongdoing for the ill-fated release of ME? Did Apple admit to faulty design of antenna/bendgate? Etc. Feel free to correct me.
I just think that it's only 1 phone that has
catastrophically cause a massive recall at this scale, it's not like their tablets, s-series, c-series, J-series, etc product spontaneously combust as well. Sure, there are outliers of people misusing or actual defect that somehow escape the QA process, but I highly doubt that people would need some kind if assurance or hard data explanation from Samsung into the explosion before they'll purchase another device.
Again, as a consumer I agree that the cause should be transparent, but they've already recall the product, they've refund the money, and I'm sure people who were directly injured by it will settle out of court, but I doubt we'll get the straight answer from Samsung as to the primary cause of the explosion, if they did figure it out.