While I'd agree with you that too much is being made of the absence of backlighting (I have no use for it in real terms, although I do find it sexy looking on my MBP), I do think that some people really need it, esp. those who are hunt and peck typists and need to frequently look at what their fingers are doing. I'm kind of the same opinion about the glossy screen.... I find it a non-issue; I actually kind of prefer the saturated look of the colors on glossy. Not having a choice between it and anti-glare doesn't bother me at all.
When weighing the features of this product, I think you have to keep in mind that the Air is a much, much different price point than the MBP and even the previous incarnation of the Air, and leaving some less essential things out is probably one of the ways Apple managed to get the cost so much lower while at the same time being able to make this their smallest notebook ever. No matter how talented your design and engineering people are, there are always tradeoffs. Thus, I don't think you can expect the Air to have every whiz bang feature that the MBP does. If you do expect that, maybe you need to revisit what you really are looking for, and just pony up and buy a MBP.
On both issues, it's really a balancing act... what do you sacrifice to achieve a certain goal? I'd gladly give up backlighting to have the tiniest, lightest computer Apple is able to give me, because size and portability were my number one criteria. I know some people who have posted here to protest the absence of backlighting wonder why those of us who don't care about it have responded here, but as a consumer, I can tell you I read all these Air threads very thoroughly before deciding to buy, and hearing both sides of an issue is very valuable to me when I'm about to drop $1400 on a piece of hardware.
Some people are going to care about it very much, and some aren't. It really pays to research around before you buy and even better, find one to try out so that you avoid disappointment.