But you mentioned all the other contradiction you seemed to be fine with... So this is just crating one more. Why is is any more overwriting anything, than TOS movies establishing that the five-year mission took place in 2260s, thus 'overwriting' several things established in TOS (some of which already contradicted each other)? I mean there literally is no timing of Eugenics Wars that wouldn't contradict something established in the past shows. If they ever say anything concrete about its timing again, they will contradict something. I absolutely think what people wrote in the past should matter, but there is no need to get hung up on technical minutiae that already contradicts itself. The best way to respect the past writers it so take the intent of their writing seriously, and try to treat it holistically.