You can still enjoy LD on its own, you just won’t pick up on all the Easter eggs. SNW and LD are modern shows and what a modern audience more of what they expect these days (DIS too, but it being heavily serialized may be AA turn off to more causla viewers). TOS can be very campy at times, a product of it’s times, which makes it hard for some.
I guess what I’m getting at, is that it’s OK to enjoy the new stuff without knowing the 50+ years of backstory.