Of course you can, those features matter to you, but when they don't matter to someone else it's because they cannot afford it.
If canon bring out the 5dmk3 for £3000 and I buy one, then 12 months later they bring out 'A new 5dmk3' with articulated screen and higher res lcd. I'm not going to buy one just to get the latest product if those features don't matter to me am I? To me it wouldn't make the product better as they are not features I would care about.
I wouldn't but it's not because I'm poor but it wouldn't fit my needs or offer value for money.
You of course would buy it because you couldn't stand to have a product you considered inferior because you would feel like a poor man
j/k