A union derives it's power from its ability to inflict strife on the company. Right now your union has very little real power.
A non negotiated, imposed deal which vastly favors one side will never last. Eventually the tables will turn and the jobs will return. This time all the pilots will be on the same POS contract. If your plan is to abandon ship at the first possible chance, fine, but if you actually want to stay with CX, then the union is your only hope of one day returning to a decent contract.
Imho the salary numbers are actually not bad, if you can actually work enough hours every month. Other parts of that contract; it is hard to fathom that they are actually legal.