Dynamic dispatch is literally a runtime feature of a language. That's why it's called "dynamic". GP can absolutely use dynamic dispatch "all the time" in the sense that they use it regularly in their program, perhaps in every or nearly every program they write.

Your statement is verging on the nonsensical, like saying to someone "You don't use integers all the time, sometimes you use strings, they're different things." Well, duh?

EDIT: Also, it's discouraged on this site in general to use all caps for emphasis. *phrase* produces an italicized/emphasized form with phrase.