Dunno why they did it originally, but among forum white knights it seems to have become the go-to excuse for why certain features or bug fixes are fundamentally impossible and therefore we should never ask for them. It seems to render "impossible" (and therefore unrealistic/unreasonable to ask for) persistent NPCs, non-RNG based game systems, persistent, changeable/destructible structures, and prevention of Combat Logging, among other things. So that's a few more things the devs don't ever have to work on. I guess that's as good a reason as any.
Having changeable, destructible structures has nothing to do with Netcode, it all about how you do that in a MMO type game, where you are playing along with thousands of other gamers playing across different instances, not all visible at once to all players.
Figuring out the game play mechanics of that is fairly tricky, not recording the state of a structure in a instance after player activities and then storing that state in a database so it can be sent to other players when they enter into a system, you could even have a reset time for each system as you don't end up with a stupidly large database.
If you allowed players to destroy stations across the bubble their wouldn't be many left. There would difficulty with keep everything in synced across different instances in real time, an what do you do if there dozens of different instances running at the same time for a single system like Lave?. You face that challenge no matter what type of network design choose. Instead it all down to how you design the game mechanics, most MMOs like STO do it by having events which you queue for that are more like levels in a offline game that resets every time you enter them.
They already drastically improve persistent NPCs from one instance to the next compare to the early days but this has little to do with the netcode and more to do with what data you are collecting an storing server side and how you are using that build players instances.
This is the problem people like you haven't got a clue what you are talking about, so it impossible to have a sensible discussion.