Support Assist does not find latest drivers

I have an XPS 9500.

When I run Support Assist (or Dell Update) it does not find the latest drivers. It always syas everything is up to date.

For example my Killer Wi-Fi 6 AX1650s driver is a version from 29-Jun-2021, but there is a leter version from September this year.

Why doesn't Support Assist find this and other later drivers?