I'm not suggesting anything. The post clearly states "My 60 night cat1-7 cert was deposited on Jan 7th or so with 180 day expiration and then updated with Dec 31st expiry sometime in the last week."
This refutes your statement that you made earlier.
I don’t see how it refutes it:
Some certs issued at the beginning of the year were extended in the same batch that extended the certs issued in the last weeks of 2020. It’s unclear if 2021 certs will be extended and there’s been no official confirmation from Hyatt either way.
The post you linked to is one example of the piece in bold.
There’s still been no announcement from Hyatt that confirms that they will continue updating expiry dates going forward. They very well may - but again, nothings been confirmed.