So, it's not that this bug is a _bigger_ problem on Win11 24H2, it's that there were so many _other_ problems prior to Win11 24H2 that nobody would bother with this bug in the first place. You have nothing to worry about from being on Win11 24H2 specifically when it comes to this bug.
And:
This is an information leak bug. No danger exists in practice for anyone from this bug alone. It erodes one very weak layer to a defense-in-depth strategy. It could have been used as part of a chain of exploits to provide the attacker with information (the kernel slide) that they needed, but it just provides a meaningless memory address on its own.
It would seem this was patched in the Aug 12 security patch rollout.
If you have another exploit that will write bytes under the attacker’s control to an attacker-supplied kernel address, you will be able to do the Windows equivalent of escalate to root.