I can't say that there have never been exceptions,but my understanding is that the Family Boss was always present at a making ceremony, at least during Gotti's era. Usually,this was the time when the new Soldier was officially introduced to the Capos and the Boss. Of course,he already knew this information,but it seems to be a time honored tradition.

Also, Gotti was made around 1980,after serving his time for the McBratney killing,which was a favor for the now deceased Carlo Gambino. So he was still in good standing with Paulie,and in fact was made the acting head of the Fatico crew. The whole drug debacle was still a couple years away.