Are Christian Zionists moving the hands of the prophetic clock?

Are Christian Zionists moving the hands of the prophetic clock?

If so, one would imagine an all-out attempt at Gentile evangelism might be a better tactic:
Romans 11:25 I do not want you to be ignorant of this mystery, brothers, so that you may not be conceited: Israel has experienced a hardening in part until the full number of the Gentiles has come in.
Unfortunately for them, they’ve lost a few years of good missionarying time since 1948.