Do media aggregators have a duty to provide links to public news sources in emergencies?

The NWT government and city of Yellowknife are describing in tweets, Instagram messages etc. how to search key evacuation information on CPAC and CBC. The broadcast carriers have a duty to carry emergency information, but Meta and X are blocking links.

While internet access is reportedly limited in Yellowknife, residents are finding this a barrier to getting current and accurate information. Even links to CBC radio are blocked.