Sad to say, I agree — not safe and the only way to prove who’s correct is a bit dangerous, depending on what you ride.Mine was spotted by my local mechanic. He says its more than cosmetic & if left as it is it will continue to wear away the frame and eventually to the point where it will fail.
But you’re in a such tough place just now with choosing what to do about that — feel for you mate. I speak from experience — although not with a Levo on this occasion (am a Levo owner).