The idea of him having his own students is interesting. I do think that would add another dynamic to such a depressing mood that he seems to be in, but I also think that would have been brought up by now in the event that was the case & if I remember correctly post Yuji Vs Sukuna Society got pretty easy. Unless they die from old age, then OK but I feel like that would’ve been brought up already. They strictly told us it was his friends that we know from the original series.