True, but in my experience those internal stresses tend to manifest either while cutting, or very shortly thereafter.
However, I've found that individual boards can have some pretty interesting stresses that are not readily apparent. An incident involving cutting stringers for a set of porch steps comes to mind. I had to make relief cuts to get a worm drive skill saw more than two inches through a Doug Fir 2x12. I all but carved those treads in. The whole stick was like that, turned a 15 minute job into an hour long struggle.
I've wondered for years what that poor tree lived through, to bind my saw up so bad.