Google refuses to patch this. I wonder what would happen if you submit it to the Android VDP as a permission bypass.
There’s also this SO question by the author about the bypass: https://stackoverflow.com/q/79527331
That's why projects like XPL-Extended (and previously XPrivacyLua), are an absolute need. I never run an android phone without these.
Hopefully GrapheneOS deliver on their promise to provide a better backup solutions than seedvault.