Manulife for one has updated its travel insurance policy to state that jet fuel shortage are now a 'known event' and may not be covered if your flight is cancelled.
Travel insurance update | Manulife https://share.google/mhWZpZbMScyTJDJkQ
Policy purchased on or after May 5, 2026: benefits related to this current situation would not apply, as it is now considered a known event.
If one company is doing it, then others are sure to follow.