Unlike negatives, which can become rhetorically positive when doubled, or even negative again if tripled, redundancy just gets increasingly redundant when multiplied:
At present they’re currently shooting Episode 18 of the sixth season at the moment.
Negatives function grammatically in the same way as multiplying by negative numbers in math, altering polarity each time. Redundancy is additive. Or, rather, it’s like multiplying by 1 it adds a new piece of apparatus to the equation without changing a thing.