This used to work for me, but now I get the “Oops! Infuse is no longer able to access your account since the access token has been revoked.” error when trying to switch profiles in-app.
I could probably fix it by “forgetting” the Plex share and adding it again, but that seems a bit pointless at the moment since the custom home screen layout still isn’t preserved when switching profiles in-app (unless I missed something in the changelog?).