Sure thing, and I'm the president. DLC = Useless overpriced garbage.
Well, for all I care you could be the danish queen.
The so called DLC for FO3 included Broken Steel/Point Lookout/Mothership Zeta which most certainly weren't garbage (especially Point Lookout was pretty awesome!). The DLC for F:NV included Dead Money, the ones for Mass Effect 2 included Arrival and Lair of the Shadow Broker. The term DLC is a broad one nowadays and is also used for things which can't be considered an expansion, but are nearly as big as one.