Sorry my bad, you meant your burner google account.
But like i said above, i installed google service framework in my main profile(second profile, because of tidy owner setup)
and in > passwords and accounts , there is no G artifact
I tested it in a fresh profile, and it seems to connected to PlayServices.
GSF only: NO "GoogleArtifactAccount"
PlayServices only: "GoogleArtifactAccount" is shown
Store must be the same with "GoogleArtifactAccount", didn't tested, because it will install playservices anyways.
Maybe it's is because you installed playservices and store once, and the relic is still shown after de-installation.
I guess, if it's bugging you so much, you could, like you mentioned above re-flash your device.