It isn’t what I accept or reject that matters. As a Lutheran, I am bound by the teachings of the Church through the Confessions.So, a sola scripturist should be able to accept some oral tradition since the written may not be able to refute it. Or are you really saying it must be confirmed by the written part of the Tradition which really mean Bible Alone. Which brings us back to Paul…who give does not give more weight to one or the other.
It must be remembered that an oral speaking of the Gospel predates it being written down.
From a Lutheran standpoint, I can accept some things not confirmed explicitly by scripture. For example, I accept the perpetual virginity of the Blessed Virgin. The confessions refer to it, but it is not doctrine. It is adiaphoron. Those things that are doctrine, things which bind the conscience of the believer, come from scripture, and are often witnessed to by tradition. As an example, the Holy Theotokos is clear from scripture and the doctrine affirmed by the early council.
Jon