On the TA Chile forum, it was also reported that the new December email sent to incoming tourists was very badly worded leading to shock and confusion.
I surmise the new December email text was not properly proofed. The only things that changed on December 1 was the continuation of mandatory arrival testing/isolation till negative test result, the extension to 7 days from 5 days for the mandatory quarantine of special case situations - aircrew, diplomats, special consular permissions, direct family members of citizens and residents who are not jabbed, the entry prohibition for a list of African countries and the mandatory arrival quarantine of Chilean citizens and residents who have passed through those countries within the past 14 days.
You can still continue onwards on a domestic flight after going through the process to isolate at your destination till negative test result.
Chile's first case of the new panic was discovered yesterday in the central zone in a resident who traveled from Ghana (which is not on the list put out by the health authorities).
The test still is free as of today.