Correct. Rasmussen is not a Kerry shill. Shouldn't accuse poor Rassy of being a shill just because you don't like his results.
Rasmussen's bigger problem is that his results appear to be unreliable and produce odd and contradictory results... just as when he produced two polls, done over the same period of time, showing Kerry with a large lead over Bush in NH, but a fairly small one in NY.
In the broader scheme of things, his results are fairly meaningless. I don't think anyone pays much attention to them outside of the blogosphere.
Rass' methodology has traditionally had a high threshold for likely voters. The upshot is that the numbers reflect in-party support and statistical noise.