Why wouldn't they update everything time wise?
Lazy, too many pages to update, who knows. If it helps any Asus isn't any better, and if anything are probably worse.
And what about those Driver update software?
Comfort-ware at best, snake-oil at worst. Chipset drivers for the most part may or may not have any benefit from being updated, and you will find lots of prople that will say not to update them on a working system. The only drivers you should have to update would be the video and/or audio drivers as they can and do contain fixes, performance improvements, etc. And again they don't have to be updated just because there is an update, if the current installed driver is woerking as it should then leave well enough alone unless there is something in the release notes that addresses a specific issue you may be having, or if it is something like a new game and it will only work with the latest.
Best advise about those driver update programs is to not use them.