Duckduck That is not a viable solution anymore, as MitID has stated using Play Integrity during the activation process, so the presence of Play Services is no longer enough to activate MitID. Old installations of MitID work fine for the time, but activating a new authenticator is currently not possible.
I have, like @Apathy contacted MitID and suggested that they either start using hardware attestation or allow advanced users to somehow opt out of the Play Integrity checks.