The article slipstreams drivers rather than any updates - but yes, you could slipstream updates, and there are unofficial pre-updated ISOs available.
I've tried ones for 98, 2000 and XP and I've found that most of those unofficial updates go too far - they tend to try to do things like backport DLLs or APIs for better compatibility with newer software, but I've found they make the system less stable and less period correct - which affects software compatibility.
In my case, I'm trying to run a mix of old programming software and old games - both of these had problems on unofficial update packs.
I've tried ones for 98, 2000 and XP and I've found that most of those unofficial updates go too far - they tend to try to do things like backport DLLs or APIs for better compatibility with newer software, but I've found they make the system less stable and less period correct - which affects software compatibility.
In my case, I'm trying to run a mix of old programming software and old games - both of these had problems on unofficial update packs.