I basically make every single flow consult a list to see if it's allowed to run, that way if any disabled or deprecated flow are re-enabled again but in the list the status is deactivated it will promptly terminate the execution, it's also useful for flows that are in queue to run and you can't disabled them.
And it allows for any SharePoint owner to quickly disable a flow in case of an emergency without needing to send an SOS to a flow owner.