This reminds me of the HQ100 crt TV from them. It has a SuperFinePitch trinitron tube, the best HD crt tube ever, at least in the consumer market, and also pricey it was. But surprise, the european models with SuperFinePitch tubes (32" and 36" variants of the HQ100 model) don't have HD input!!!!!
It's like selling a car with a super power engine but putting an accelerator that only goes through half the way...
It's most likely some marketing department assholes like what happened in Commodore, coming in and totally wasting a great machine that took a lot of hard work to design by very good engineers and the saddest part is that having an HD input on the HQ100 would probably not even market predate any of their LCD / plasma (they still sold plasmas in 2004 I think) tvs.
The TV probably even has internal HD inputs cause the picture processing upscales the image, so someone could hack it, but probably they were not sold in high enouph numbers to get the attention of good electronics hackers.