It's using your economic power as a point of influence, usually to illicit a change of particular behaviour ,be it human rights, animal welfare, worker's rights etc etc.
Edit :- Oh environmental too
It could be the Indian manufacture has not been delivered as scheduled because of their own issues , but that switch to Pfizer for U40's must impact also re delivery .
There may have been an instance where they brought it down to 8 weeks for 50 something's.
Then the Regions with high India variant got flooded first dose for a couple of weeks .
I have wondered if some data has been held back , possibly appearing later on as a stonking few days in a bid to not...