That is highly unlikely, and even if so... sucks to be them

This game was always marketed as a journey, blaze your own trail etc. etc., so I think the market is space opera lovers / space game lovers still. It will offer
more to the customer now. Not
less.
Again, I don't even understand why people keep referring to other FPS games. We will be able to walk in stations, buildings and inevitably - ships. I know some of you will whinge about "butbut muh spaseshiff gaem!", but you will get over it. No-one is taking "yer spaceshiff" away from you. And those of us who want freedom of movement, will get that. And what did you expect? That they won't give our avatar guns? I want to be a pilot, not a spaceship. And this is a step (pun intended) in the right direction.
This opens up previously inaccessible areas. This will alter your perception of the game forever (sense of scale). Unless you have VR, you know nothing about the size of things in Elite. They are HUGE. No amount of YT ship comparisons will give you that perspective. The moment you'll take a walk around your Anaconda or similar big vessel you will understand and maybe stop moaning. Fdev have created a foundation for tons of new gameplay to build upon. Structures are procgen supposedly, so it bodes well for the entire galaxy to be filled with (alien) structures if they so desire. Of course, given the previous track record, it might be just like horizons, barebones gameplay never fleshed out - but maybe, just maybe they realised somewhere in 2017 that trying to build upon what they have without "legs" is counterproductive and goes against Braben's vision. And having launched other titles had the financial means to undertake the biggest refactor since horizons. As always with fdev - only time will tell.
Also, have it occurred to you that you might not be the intended audience for this expansion? Maybe some younger demographic is? One that isn't tied to nostalgia trips to wireframe models or flat-shaded vector graphics? An audience that expects that in an open world game you are a player and not a vehicle and can use any vehicle they want?
Or maybe simply allow yourself to "dream big", because staying limited to "spaseshiff gaem" is actually regressing and getting stale nowadays? Just my opinion. And I'm one of the undead, lol.
PS: now about that flatscreen in VR... ;-)