WTF is up with this 24H2 update I keep hearing about?
The first thing you have to know is that it hasn't been released yet! That's right, every one of these articles screaming about 24H2 bugs is based on Preview, commonly called Beta, software.
This particular issue being caused because Microsoft is moving to "Checkpoint Updates" so that updates will install faster and be smaller in size.
Right now 24H2 is marking parts of 23H3 as necessary for future updates so they can't be deleted. This will 100% be fixed before 24H4 goes RTM.
Basically this one is a non-issue. It's being used as an outrage generator.
I wouldn't. This isn't a real problem but you'll probably make one if you force delete things marked as necessary for Checkpoint Updates. This 8.5gig of "stuff" is only there because 24H2 is still in Beta and it has incorrectly marked some things from the 23H update as required for future updates.