To be fair, Golden Oak/Four Seasons are technically a part of the same complex (they have the same entrance) and you can't even see the Four Season building from the road unless you actually go in.
You forgot to mention the land sell off to Bonnet Creek, but imo, like Golden Oak/Four Seasons, it's well hidden and the average guest doesn't even know it's there. You can't see the hotels unless you go on property.
So yes, they have sold off land, but the resort is still fairly secluded. I'd say the worst offender in the whole resort to ruin "seclusion" is the McDonalds right outside of the all-star resorts.