No. The block probably does wear some. But if it is really worn enough to lose oil pressure at the cam, the engine probably isn't worth fixing as it would require a new block.
The crank usually wears out first. On most four cycle engines the crank turns twice as fast as the camshaft.
Like the other guys said, he really needs to take the crank out and get it measured with micrometers. There probably is just too much clearance between the crank and bearings, especially the rod bearings. And there is a difference between looks good and good tight oil clearance too.
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