It sounds ridiculous because realistically, Subaru has two major size classes they compete in.
Compact, and midsize.
Compact includes:
Impreza, XV, Forester, WRX/WRX STI
Midsize includes:
Legacy, Outback, Tribeca (the Tribeca successor will likely compete in the midsize class)
The BRZ is on its own as the sole 2-door.
Seriously, that's 3 different size classes Subaru competes in, they've been doing it for a while. The Tribeca is basically a heavily re-engineered 4th generation Legacy. The article goes about it as if Subaru hasn't been sharing components and subframes. Subaru has been using the same exact R160 rear differential for over 4 decades.
And if you go back to the EA series days of engines, you will realize the Leone was pretty much the ONLY SUBARU made (with Subaru-exclusives such as boxer-4 and 4WD) in multiple variants (4-door sedan, 5-door wagon, 3-door hatch, 3-door hatch fastback coupe, 2-door truck utility, 2-door notchback coupe).
In my eyes, it's just Subaru announcing to the world what they've been doing for decades, unless someone could prove me wrong.