I'm not a lawyer but if "maintenance" is interpreted broadly, it might include any operation or service that keeps the app running, which could mean they cannot serve content even if they never updated the app again.

Serving content could be seen as an ongoing maintenance activity.

The bill also prohibits the provision of "internet hosting services" for the app. Serving content over the internet could be considered providing hosting services, which would be prohibited unless there's a divestiture.

Just putting it out there.