That's the whole point! By not volunteering for anything ( working G days, training positions, etc) at a time when we trying to get better pay and rosters you're exerting immense pressure on the company.
Airplanes have to be crewed, upgrades have to continue in line with their expansion plans, but when that becomes increasingly difficult because of lack of volunteers, a clear message gets sent to the management. Delaying tactics will not be an option for them anymore. It will be in their interest to come up with an agreement that is acceptable to both parties as quickly as possible.