SNW definitely feels like it is deliberately channeling TOS energy far more than any other iteration. It is strongly adventure focused, and many situations are resolved with fisticuffs rather than diplomacy. The galaxy feels far more chaotic and less organized than it does from TNG onward. Even aesthetic stuff like the red crystal asteroid field feels more drawn from the wild sci-fi ideas of the 1960s, before the more mundane realties of space exploration made it clear that space was really just a lot of empty space with occasional patches of dirt and rocks.