why not.....it's all wood.
but it's like one of those things where someone says a cue is handmade, and someone else says "but he used a router". is a cue not a real wood joint if it has a thin elkhorn collar(billiard cue)? ,,,,even though it has a woode screw.
seems to me, cues are described by their collar material, ie SS joint, phenolic joint, ivory joint,,,mainly because a metal pin is standard fare and that they may be describing a cosmetic feature. . so i would consider a cue as wood jointed even if it had a metal pin but wood collar.