Well, I guess it was just my system. I'm thinking I had an old copy of the driver. Despite not having hwinfo installed, I had this:
C:\Windows\SysWOW64\drivers\HWiNFO64A.SYS
That was the one that I got a pop-up about, that had been blocked from loading.
Unfortunately I couldn't get memory...
This issue is back after installing:
2023-07 Cumulative Update Preview for Windows 11 Version 22H2 for x64-based Systems (KB5028254)
I turned off the memory integrity check as a workaround, of course. Updating software doesn't seem to help.