This comes up occasionally on the camping forum. I'm pretty confident the Fort will be staying for a while.
Some argue that a "campground" was one of Walt's original plans for WDW and use that as rationale for it staying. That is true, but hasn't protected other "originals". The more current evidence is that all 300+ cabins are currently being replaced and turned into a DVC cabin resort. They wouldn't be doing that and adding to the infrastructure if there was any near/intermediate term plans to bulldoze the place.
While the Fort does take up a fair amount of land, it has relatively low overhead compared to a traditional resort and still generates a fairly significant revenue stream for that low overhead.
As for R**********, the started and then stopped DVC Resort. It is literally butting right behind the Settlement area of the Fort where Hoop-Dee-Do, Trails End and Crockett's Tavern are. Original plans showed over the water cabins all the way down Clementine's Beach. Clementines's was moved to the other side (original side) of the Fort boatdock when construction was ongoing and the boat rentals that were on that said were stopped and removed to make room. Later plans do not show the over the water cabins extending down that far, but can always be added back in.
No official announcement has been made regarding restarting the resort construction, but several of us that are following it closely have noted new permits that indicate they will pick up in the short term. Other "improvements" have continued ("CM" parking lot that fits the original plans for the new resort parking lot)
The plans below were some of the earlier ones. The red is the foot print of the resort. Blue are the over the water cabins. The ones at the top are where Clementine's Beach and the boat rentals were. The green are the existing Fort buildings that make up Hood-Dee-Do, Trails End and Crockett's Tavern. In the very bottom right corner show a few of the sites in the 700 loop.
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This aerial is from a few years ago before the new parking lot was added close to the one in C-108/109 above.
Trails End is noted. The circular roads to the left of TE is R********** construction. Wilderness Lodge is all the way to the far left. Wilderness Lodge is actually quite a bit closer to the Contemporary than the paused DVC.
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