Thunderf00t recently made fun of SpaceX for failing to do what DC-X did in 1995, but he ignored the fuel savings of the belly flop followed by a brief burn. Doing it fuel efficiently is critical to practical reuse.
The slightly mirrored fresnel lens of the internet.
My take is if someone is doing this, they are complaining about the overall lack of progress from an ancient achievement till now. They aren't wrong usually, but our flawed system doesn't make progress in that way.