CX would never do something that drastic. It’s not their style.
The CX pilots would definitely “spit the dummy” and would take severe industrial action if that were to happen. I am sure CX is feeling the pressure.
On a different note, even if the CAD adopts the new 65 rule, it states “55” in your contract. BUT, we are all on individual contracts, so the pilots will have to sign individually. So as you approach 55, expect to get a new contract in your mailbox. If you are deemed worthy, of course.