Using static conditions rather than polymorphism seems to just be a common thing that people tend to do, regardless of skill level or quantity of experience. It's not uncommon for people just not to think of using polymorphism, if the objects in question wouldn't really model any particular kind of object as such (they're just there to provide a table of function pointers). This says nothing about the quality of their code, or the general OOness of their designs, or the number of digits in their IQ.
It's a bit of a shame, because I've found code to be reliably improved by using objects as simple tables of function pointers. The same is less often true for using objects as models of things.
