People cry all the time about quite a few things. Personally, I don't blame most of them. (There just are a few things around and about regarding which a person might well cry.) AND I might submit that much depends upon the particular locust in hand in a particular case. Even within a particular locust species, and trees that have grown right next to each other, a person can have a knotty / dirty / sandy / cracked / twisted mess full of (a few kinds of) bugs, on the one hand, and straight sticks with straight grain that can be sliced to beautiful effect in quarter, on the other. Locust be predictably a bit unpredictable. (Until examined and sorted, of course.) And yet with locust there is about twice the chance that even after an observant sort, there will come a surprise when saw tooth comes to wood.
Yes as to really / correctly sharp chain or mill saw blade (band or circular). Yes as to "not-greedy" tooth geometry.