Having said that, I agree that there can be stinkers out there where it is obvious that the developers clearly didn't have the budget necessary to take advantage of some of the higher quality things you can do on the system. Bargain bin titles such as "Jeremy McGrath Supercross World" or "Warriors of Might and Magic" spring immediately to mind. That's not a criticism of the console, as you can find titles on almost any system that just stick out like a sore thumb and look sub-par regardless of the video monitor employed.
"A garbled mess," that's "probably going to look terrible," you say? Hardly, however I'd be interested to know the make and model of your particular TV set, that I might avoid purchasing it in the future. As an aside, part of my livelihood revolves around calibrating high-end projectors and LCDs, so my eyes have been trained tolerably well to spot the deficiencies you describe, yet I see nothing remotely resembling such. I'll admit that I grew up with an Intellivision and ColecoVision, so admittedly I'm easily impressed. That a video gaming system maxes out at 480p does not in my book constitute a show-stopping limitation, and the fact that the Wii and PS2 are selling so well only seems to support that viewpoint.