NEVER run a new motor on first start at idle. The crank is not spinning fast enough to sling oil to the cam. Minimum is 2,000 rpm. Best procedure is 2,000 to 2,500 and vary it up and down.
That break-in procedure is published by every cam grinder I know, or have ever read about.
To GARAK's point - I don't have customers. I build engines for me and my friends (at cost). I have worked in shops for other people wrenching for wages, back in the day.
COMP flat cams were a known phenomena just like GM's. Cam cores were too soft and so were their lifter faces. But their "not so good" break-in oil helped speed things along nicely
There are literally million of weekend racers and street guys who have never lost a cam by just using good premium oil. And getting that motor running, and then running it. Like new cars, folks wanna go ... And that's good for the valve train. Start it and go. Spin that motor. It will last a lot longer.
You can baby an engine for longevity after it's broken in