In T222852, we discussed that we only want users who create their accounts after the deployment of the GuidedTour discovery feature to receive the GuidedTour. In other words, if a newcomer created their account last week, and the feature was deployed today, that user should not receive the popups if they log on again tomorrow.
In the gif below, you can see my staff account (which has existed on Korean Wikipedia for a long time) receive the popup when I go visit Korean Wikipedia for the first time after the feature was deployed:
