I'm curious why you think that. It's all these mills do all day, for thousands of years. Reducing waste by more efficient cuts is literally free profit, which is why they've had automatic scanners and optimized for years[1, 2000].

I've done a little woodworking, but it's enough to realize that wood is complicated and tricky and there are definitely pros & cons to the various cuts. I'm sure if they could get more high quality cuts from a given log they would - it is more valuable down stream.

[1] https://www.vision-systems.com/articles/print/volume-5/issue...