I think enough has been shared here to show that traditional Latin rite priests today cannot validly confirm
Just a note on whether or not some priests have fresh oils or not. Even if a priest does not work directly with a bishop, often the traditional bishop will give Holy Oils to reputable clergy. They might not see everything eye to eye, but, for the good of souls, they want the baptised, and even more so, the dying, to have whatever Holy Mother Church could give them. No one can be everywhere.
I know that at least in the recent past Recognise and Resist Bishops have given Holy Oils to known sedevacantist priests.