Very true- if the age of CRT's had extended a bit longer to support a dvi connection (digital all the way to the last output stage), that would have revealed a final layer of image quality that we would probably have found to be quite comparable to LCD performance. Essentially, it would have removed the analog VGA video cable from the chain (plus some analog electronics inside the monitor).
Per my observations of in-store demo units, I am unconvinced any of the high-speed LCD models are really getting close to eliminating ghosting, to the degree that CRT's possess. What it comes down to is some models have less ghosting than other models, but still noticeable ghosting nonetheless. If you find a 21 ms model somewhere, the ghosting is very pronounced. So if you are upgrading from one of those models, it is easy to fall into the perception that faster models are close to eliminating ghosting altogether. However, on an absolute level, it is still ghosting pretty easily- it's just a few notches less than the slower models, though.