It’s not really a problem anyways — if you don’t want your toast black as sin, avoid the intensity setting number seven brings with it.
To put our toaster’s temp control system range into perspective, a one is about a tea candle and a seven is seven seconds on the sun. Somewhere within that precarious range is the perfect setting for any typical toasting need.
For a sandwich, I like to toast at about a two, and for anything taking a spread, I’ll bring ‘er up to a five, maybe six if it’s a good jam. But seven? Not unless I want to replicate a supernova.
So, the obliterate-matter setting isn’t really an issue if you stay away from it. Just don’t be crazy and roast at seven.