It's not so much the TV issue. It's a given that for HD you need HDMI.
And, with only that lonely HDMI output, unless someone is committed to going through a receiver, they are goingto be limited to what their TV speakers can produce. since hnewer TV's are becomng less and less "Audio output" friendly, they totally destroy any upgrade path they might have in mind.
Also, some of us are still making do with ancient audio tech where having a digital output, say coax or toslink, can provide a great boost in it's usefullness with todays tech. It may not do the latest Blu-ray only sound but plain old DD and DTS still works pretty well. My Denon 2802 certainly does. MC analog* is even better for some of us that's really a dying feature.
Heck, even an old two channel stereo can sound pretty good when it's fed a good ole two channel red/white analog feed and it's speakers are flanking a fairly new HDTV. And, my lady friend I mentioned in a previous post admittedly is no "audiophile" (Gawd, I hate that word) but she gets some pretty decent sould from her "scuzzy" two-channel Sherwood, fed by a red/white analog feed from the TV, and Advent speakers.
Why limit peoples choices? What can these simple things cost to keep?
*Does anyone else think MC Analog would make a great name for a rapper?