I mean that's a totally different situation than waiting literal years to train at some facilities. It's totally out of hand in a lot of places and it's absolutely unacceptable.
There needs to be some way to address that problem, be it a time limit you can be kept in a training payband, or some way to opt out of that facility after a certain amount of time without receiving training, without it being a withdrawal and training failure.
There's no reason someone should be sitting at any facility not training for multiple years or having enormous gaps of time measured in years between positions. That's a failure on the FAA's part, and if they want to say training is at the agency's discretion, the union needs to hold them accountable when thier bad decisions lead to huge training backlogs, and provide some reasonable recourse for those of us who are losing thousands a year in earnings and retirement.