From the drive warzone ( good regarding US technological developments):
"Hypersonic Ingress" indicates the Vintage Racer loitering munition has the ability to get its target at hypersonic speeds, defined as above Mach 5. It's not clear how the munition gets to the target area at these speeds, but seems most plausible based on the information publicly available now. An could be another option, but this seems less likely given the high cost and complexity associated with those types of weapons and their current developmental state. It's also not clear from the Pentagon budget documents if the Office of the Secretary of Defense conducted a full flight test of the complete system or just the loitering munition component.
Vintage racer can be described as an intelligent loitering warhead that can be carried by Ballistic or Cruise missiles.
My guess is that it is deployed by hypersonic means (BM/HGV...etc), once it gets there it loiters at subsonic speed.
Ok I guess it's fair to say maybe it bear a little resemblance to what FT has described here. But I just don't see the point of this overly complicated contraption if that is what it really is, if you want to hit multiple targets won't it be simpler to send multiple individual HGVs VS one big HGV dropping bomblets?
Maybe there is something we don't know, maybe one big HGV is actually simpler/cheaper compared to multiple small ones...
Still the FT article is a dumpster fire, I'm scratching my head here. And honest I won't completely rule out that part of the story maybe fabrication.