I have to disagree with your final analysis because...
... this reviewer essentially repeated the same arguments as every other paid reviewer of the Xoom, though he went farther to actually put it into consumers' hands to get their feel on the device as well. If anything, it would appear to be an unbiased report of how ordinary people, not techies, respond to the device. Yes, every single paid review I've read so far has said the product simply 'feels' unfinished, unlike the iPad.
And that brings us back to your first point about finished vs unfinished. Tell me: If you went to an auto dealership and bought one of their models, only to be told, "Well, the speedometer doesn't work right now--we'll have that working in a couple weeks and, oh! The engine you wanted won't be available for about two months; we've installed a smaller one so you can use it but you'll have to bring it back for the one you paid for to be installed," would you really consider that car a 'finished product'? On the other side of your argument, you say no product is finished if it has to be updated and yet, how many cars are sold every year as finished products when their customers KNOW there will be an upgraded model out the following year? The same holds true for any item you buy from a store, it's supposed to be a finished product containing everything needed to make it work as advertised and if parts or functions are missing, the manufacturer definitely takes the hit in reputation and lost sales. Yes, Apple took a bit of a hit from all the bad publicity about the iPhone 4's antenna, but when everyday users realized it had no noticeable effect on their everyday use, the issue just went away; the Xoom's lack of advertised Flash, memory card and 3G/4G capability requiring software updates and physical return for parts installation is by no means indicative of a finished product.
So the bias in your argument is all yours.