Had Gore won his own homestate, Nader would not have been a factor.
Irrelevant.
Plus, the amount of votes that cost the election could have been won by any of the third party candidates. I'm sure the Socialist Workers Party or even Pat Buchanan's campaign took enough votes away from Gore, as did the "butterfly ballot" screw up.
But those campaigns are not as insidious for not being Halliburton and Koch brothers-funded campaigns run by a complete megalomanic for no reason whatsoever but to boost his giant ego.