Pretty sure the answer is no, as its not possible to edit the system administrator profile, but just in case...here goes.
When new permissions are created by Salesforce, is there any way to get these included for the system administrator profile itself (ie not by creating a new permission set and assigning it).
I'm testing API client whitelisting in my sandbox, and the new
Use Any API Client permission was not added to the system administrator profile. In looking, I noticed the new-ish
set audit fields upon creation is also not enabled, along with a few others here and there.
My general sense was that the standard system admin profile is granted all permissions by default. I do wonder if these permissions would be checked in a new org. Spun up a new DE org and dont see many of the perms in there at all, so going to consider this a moot point and close the question.
So if there is any way to add the permission, would be interested to know.