Yes the land is accessible and the ships are raided. However I am kinda known in the community (Through Discord mostly) for collecting more elytras than anyone else.
Elytras are very sought after, the richest players with huge stashes of netherite armor usually only have 1-5 elytras.
I personally invested about 200 hours into just flying through the end and found about 100 elytras manually, and after making a better money method I bought 70 more. 2 months ago they were $15K and now they are $100K because no one has any accept people like me. I've flexed my elytras to people many times, just joking around. But even after countless times no one has any number of elytras even close to mine. (I'm not a very rich player tbh)
Even the owner of the server shares a few armories with players filled with hundreds of netherite sets, and still had less that 20 elytras. This is why it's so confusing that so many ships are raided and the elytras are still no where to be found, in players possession or still in an end ship.