An eight is an eight is an eight.
Janina Renee in her book, TAROT Your Everyday Guide, explains when eights appear it might be best to consider the numerological meaning and eights can be about "choices that preserve order and balance, even if doing so requires suppression of some impulses and desires."
Makes me think about the lemniscate, an eight laid out on it's side. Looping over and and over again. Routine can be safe and it can also be a trap.
The Tarot of the Durer