Seems to me, making a clean exit from AP would be a priority because someone has made the explicit decision to leave AP & that gives the domain a clean AP start in the future for the next domain owner/operator.
Also, and this is out of my wheelhouse, the issue with deactivating and reactivating would be getting the Fediverse to start talking again to the WordPress blog. I know Mastodon stops trying after a certain period of failure but not sure its mechanism on reentry.