That's what I'd like to know. I've used some really bad looking cam bearings without issue. With pretty much stock stuff there isn't that much load on them.
One Pontiac 400 I was screwing with have 2 cam bearings that were actually cracked and the rest were marginal at best. The owner said run it. So I swapped cams and made not of it on the invoice. Ran it for a year, cam back in for more cam and a gear change. Bearings looked the same. So I did the swap.
He drove that thing for years. Until about a week before he died. Had to put 50-60k on those junked up bearings.
Seen it many times. Sometimes you just don't need to screw with it.
