The problem is, I think in some of those posts, HE is re-enforcing other misconceptions.
Like "120hz TVs aren't really 120hz". Technically, they ARE. the panel refreshes 120 times a second, this has NOTHING to do with software/interpolation etc.
Those "fake" technologies come into play when deciding WHAT the panel displays for those frames that aren't in the source, because the real LIE is that these TV will NOT accept 120hz input. This is where motion interpolation creates the soap opera effect, or BFI can be used, or a simple frame repetition (which is beneficial for 24p film content).
Good clarification and counter-point there.
That's actually a concern that came to mind when I was reading off the specs list of the Mitsubishi LaserVue L65-A90, touted as 3D-capable, presumably in the shutterglasses sense. PC input-wise, it only mentioned resolutions at 60 Hz, never 120 Hz. Quite a bummer if it really is a 120 Hz display, and one costing US$6,000+ at that.
It may very well be that what's holding all these displays back has more to do with the crappy control circuitry and firmware driving them. I know that I have this absolutely ****ty 19", 1280x1024 "TV" that has a component input and accepts 720p, Too bad 720p is not only stretched vertically to totally **** up the aspect ratio, but it's also shifted to the right about an inch and doesn't let you do a god damn thing about it. In addition, non-native resolution scaling is ATROCIOUS. The only thing remotely good that I have to say about it is that I don't perceive significant input lag. Perhaps it would be more viable if it would just display 720p properly centered and letterboxed.
(Oh, and don't ask for DVI or HDMI. VGA and component are the best you get on that thing.)
On to the student center over at uni, there are a couple of LG 1366x768 plasma panels (and I know they're plasmas just because of slight image retention from the OSD) that have some significant input lag. Not good when people are playing fighting games on them (or any sort of game, really, but especially fighting games). There are no options to reduce it. By contrast, the LCDs in the game lab are far more tweakable from the OSD; they can easily allow the user to sacrifice rendering quality for not having so much damn input lag.
Basically, the real problem is that the product manufacturers think they know better than the user and deny us our options to use the product as we feel best.