Identical is obviously impossible. S1 isn't identical either PS.
If you want identical; clone the damn thing LOL!!
I think it's a common misconception that S1 produces identical stock.
I agree...
However,
In the absence of related paternal inputs, S1s will be much closer to identical to the desired parent than will a bx or 2 or 3 or etc.
I too prefer regular male female breeding but I am not opposed to growing & using well produced FEM stock as parental inputs.
FEM is just as natural, in the field, as M/F breeding pairs. In this regard, FEM plants become a part of natures selections.