The drivers contain specific tweaked profiles for major game launches, so the driver releases are often tied around that. In Anthem or Metro Exodus gets a bit of a boost on Nvidia, because they tuned a specific path just for it, then that will cause a driver release. Sometimes its for new cards, i.e. like the GTX 1660, but most often its about AAA game releases and updates.
If you haven’t got a really recent card (2080, 1660 etc) and/or haven’t got a AAA release to play then it’s usually fine just to ignore the WHQL release until you find a reason to need it. It’s pretty rare that old titles get a boost, so if it works don’t break it